TrollumThinks: I'm still on my first playthrough so not got enough advice on the best items but for the editing you might want to try shadowkeeper.
It's easy to use it to add/delete/multiply items in your inventory (or at least it looks easy, haven't used it for that myself - I just used it to help with the Jaheira romance bugs).
With it you can look up items as well so you know the effects/stats.
As for suggested items:
The ring of holiness is good for a cleric (adds cleric spells)
Minsc could do well with the Crom Feyr (it's a super-weapon (hammer +5) you're supposed to make from other items, later in the game - strength set to 25 and other bonuses)
Ring of wizardry / Amulet of meta-spell influence gives more spells (to certain levels) to a mage (not sure for a sorcerer)
Boots of speed are good for a rogue who can hide, go into enemy midst, back-stab and then run away. Maybe cloak of non-detection (but my thief (Imoen) keeps getting spotted anyway, I think it doesn't work on some beasties.
Best weapon for a mage (AFAIK) is the staff of the magi (invisible, magic protection @ 50% and other bonuses on equip and it's a +5 weapon)
Otherwise some cloaks/rings of protection +2 are good for enhancing AC for anyone but especially frontline fighters need good AC (lower AC is better for anyone reading who doesn't know).
Scrolls of simulacrum and time-stop make a mage extra powerful (I can cast simulacrum now with my mage but not levelled up to time-stop yet - could use the scroll if I still had it though).
Vhailor's Helm lets even a fighter cast simulacrum I think.
NB: simulacrum creates a lower-level copy of your character (PC or NPC) which has the spells(less the level-drain)/quick-items/weapons of the original - handy.
Edit: best armour in the game is the Drow Full-plate armour (supposed to disintegrate in sunlight but I read it only does so when you leave the underdark)
cheat too many good items though and the game might be too easy at first and just hard later.
actually i found a site last night, cant remember name, but it had a few really good item cheats.
for a mage ive got robe of vecna.
minsc i got balduran helm/plate/shield if im not using a 2h.
etc, etc. if i find the site again ill post the item names/cheat code for it.
TrollumThinks: I'm still on my first playthrough so not got enough advice on the best items but for the editing you might want to try shadowkeeper.
It's easy to use it to add/delete/multiply items in your inventory (or at least it looks easy, haven't used it for that myself - I just used it to help with the Jaheira romance bugs).
With it you can look up items as well so you know the effects/stats.
As for suggested items:
The ring of holiness is good for a cleric (adds cleric spells)
Minsc could do well with the Crom Feyr (it's a super-weapon (hammer +5) you're supposed to make from other items, later in the game - strength set to 25 and other bonuses)
Ring of wizardry / Amulet of meta-spell influence gives more spells (to certain levels) to a mage (not sure for a sorcerer)
Boots of speed are good for a rogue who can hide, go into enemy midst, back-stab and then run away. Maybe cloak of non-detection (but my thief (Imoen) keeps getting spotted anyway, I think it doesn't work on some beasties.
Best weapon for a mage (AFAIK) is the staff of the magi (invisible, magic protection @ 50% and other bonuses on equip and it's a +5 weapon)
Otherwise some cloaks/rings of protection +2 are good for enhancing AC for anyone but especially frontline fighters need good AC (lower AC is better for anyone reading who doesn't know).
Scrolls of simulacrum and time-stop make a mage extra powerful (I can cast simulacrum now with my mage but not levelled up to time-stop yet - could use the scroll if I still had it though).
Vhailor's Helm lets even a fighter cast simulacrum I think.
NB: simulacrum creates a lower-level copy of your character (PC or NPC) which has the spells(less the level-drain)/quick-items/weapons of the original - handy.
Edit: best armour in the game is the Drow Full-plate armour (supposed to disintegrate in sunlight but I read it only does so when you leave the underdark)
cheat too many good items though and the game might be too easy at first and just hard later.
Bonus & Collector's CD Items List - this is the cheats code for using the CLUAConsole:
there are alot more cheats but these where just the special one for really good item.
Spear of Kuldahar +3 - waspear
Everard's Morning Star +2 - wastar
Axe of Hrothgar +3 - waaxe
Defender of Easthaven +2 - waflail
Jerrod's Mace - wamace
Sling of Everard +5 - wasling
Joril's Dagger +3 - was2h
Staff of Arundel +3 - wastaff
Kachiko's Wakizashi - wawak
Scarlet Ninja-to - waninja
Dak'kon's Zerth Blade - wa2dak
Robe of Vecna - wa2robe
Harp of Pandemonium - wa2harp
Vhailor's Helm - wa2helm
Mercykiller Ring - wa2ring
Harmonium Halberd - wa2halb
Sensate Amulet - wa2amu
Shield of Balduran - wa2shiel
Sword of Balduran - wa2s1h
Plate of Balduran - wa2plat