All right, this is a discussion I wanted to avoid. I'm new on this board and don't want to be tarred and feathered out. But the gauntlet has been thrown down and a gentleman needs to defend his honour.
Reasons I like BGI better than BGII:
1. More NPC's and thus more combinations possible. The best ones (Coran and Kivan) are gone in BGII.
2. Possibility to start from scratch in building your character and the other characters of your team (if your NPC in BGII is specialised in axes you're pretty much stuck with it and you wont waste points to try another specialisation). No tomes in BGII to change the stats either.
3. Medieval, more real, feel of BGI. Less silly monsters.
4. More attractive paper dolls in BG I. As an elf, I look pretty ugly in BGII. I have the head of a squirel.
5. No 1001 different weapon specialisations in BGI. Why is a high master in long swords completely useless with scimitars?
6. Magic in BGI is basic and simple to use, yet judging what magic to use and where to use it needs carefull consideration. BGII has 1001 different sorts of magic. Most of them you'll never memorise, let alone use. You need to know what situation you're going to confront before you know what te memorise.
7. Some monsters (the special Lych, Firkraag, ...) in BG II can only be killed if you reload 50 times or read the board. BGII is to generally to difficult to be any fun.
8. This Jon Irenicus really annoys me in these dreams. I'm now in the asylum and still don't have any idea what the storyline is about.
9. More human warparties to fight in BGI.
In conlusion: BGI is simple and elegant.
Well, maybe it's all subjective. I seem to be the only one to prefer BGI. I've started BGII three times and got bored or annoyed and didn't finish. Maybe the best part is at the end? I've finished BG I at least six times.
Let the pelting begin!