I was looking at the GT too, but I went with the Si. The Si is a little smaller, which I like and it has Navi as an option... Best Navi on the market I might add...
I had a 2001 Eclipse GS it was a dog, had poor quality in everything, just yuck!
My 2003 Civic Ex was soo much nicer than the Eclipse, IMO.
On the other hand it has more HP under the hood for around the same weight as the Si.
Personally for me it's Honda all the way