I already bought all the fallout games 1 2 and tactics but they were removed and this ones came into place, are these diffrent games like remasters or something? Are these better ones or should i stick with the previous ones?

Nothing has been remastered actually. Revocation and re-release happend due to a legalty issues.
'New versions' basicaly are the same as old. But lack goodies and have a higher price. That's all.

Thanks then i dont bother buying them even when lower priced now

[edit: deleted, saying stuff already mentioned :P]