2nd gen all the way!!!
the stock 420a non-turbo is a really reliable engine. i own 2 eclipse, a gst and a rs. i use the rs non-turbo to commute and it handles really well. the engine lasted me up to 280,xxx miles. to me thats good, so instead of selling it i just swapped in a new engine
the trany never broke down on me, i just replaced it when i replaced the engine. but yea, if you want more power go with the 2nd gen gst. . . my gst has 125,xxx miles and i havent had any problems with it. runs like a champ and eats hondas all day