MedeaFleecestealer: etb, Achilles is a very unbalanced mod and isn't really suitable for new players. It's not a mod that you play right from the start of the game at level 1, it's more for farmining purposes to get specific items with already well built characters. Typhoon is the same.
I found...
Vanilla a bit boring. The enemies are sparse and the challenges fairly easy, bosses a part.
Achilles a bit strange, the starting of the game looks fairly normal. But the Champions are ridiculously overpowered.
xMax fairly good, as minimal mod it ensures the maximum number of enemies. It has a big downside, also bosses are triplicated, making some challenges (like Gorgons bosses) pretty much impossible on normal run.
Path looks nice, but I did not played much as it seems quite unfit for the single player experience as each path as strong weak points that may prevent to proceed in some parts. I played as a "Archmage" and I got stuck against the first horde of undead for example.
Bloody Uber Diablo Xmax-Bounce is the one. It improves the number of enemies kinda like xMax, but the author is working to avoid the triple-boss problem (it should be fixed, but since it was not trivial change it has to be tested) and it makes enemies much more variegated (wizards, healers...) so battles have to be a bit more thought about. It also makes GUI and some musics more Diablo-esque, but I think it is secondary.