i LOVE the 2001 2.5RS coupe styling!!
however, i had the fortune to race one (on a rolling start) in my LS on the Garden State Parkway and he wasn't keeping up. So in terms of stock speed and performance - they aren't all up to par with the integra's. The handling tho is another story!
i'd go with the GSR, you can easily make it run faster and handle better than the RS.