first one was definitely better.
better watch, better lessons learned, better ending, better final battle, better love relationship, better finale swinging scenes, better nostalgia rush, better costume, better ability for spidey to actually keep his mask on, better villain portrayal, better set up for sequel, better relations to aunt may and uncle ben, better parker portrayal, less over the top jameson and everyone knows the tension in the tram scene was better than a cliche ridden train stopping exercise (constipated face unfortunately included).
They are both far from perfect, but i think there is far less wrong with spidey one, especially things that could have been easily rectified, such as goblin's costume (which would have done leaps and bounds to impress more for minimal effort).
there's far too much unnecessary scenes in part two i think, and ock doesn't come across well and neither does parker. The fight scenes although great don't reflect well on the characters, and shouldn't be how those two would actually scrap, which is unfortunate and makes doc ock seem a little less dangerous than he actually should be. Especially with the talking tentacles phenomenon.
I tried to watch spidey 2 on sunday and i physically couldn't do it all the way through, far too many things bug me about it, it's an uncomfortable watch.
i'm not saying part one is an easy ride, but i think it's far less jumping and rewards far more in the end then 2 does (stronger film ending in the original after last fight scene)