id deffinetly say go a S2, once you've been around S1's and S2's you'll see that the series 2 is a much more classy and modern look. also from my experiance, with a few exceptions, series ones tend to be alot more didgy and beat up than series 2's
then again, if you can find a nice series one thats tastefully modified and at a good price and condition (frinky u lucky buggfer you) then what more can you want
And also frinkmeister. even though im a postwhore, i can always make a intelligent post about the things i used to be obsessed (still am) with