I think it looks best aesthetically with the aluminum design (it matched my MBP!), however, I prefer the 3G S because of the features. What I really want it a 3G S with an aluminum enclosure!
+1
I owned the 1st gen from Day 1 up until the 3GS launch day. I miss the aluminum. It looked so chic, so next-gen if you will.
The 3G/S' use of plastic is understandable, but I'm considering getting an aluminum housing once those 3rd party companies come out with it. Just nervous about taking apart my new baby.
But I still miss my old dinged up aluminum beaut. :sigh: