I would recommend a Civic. I know many people with Civics, and they simply enjoy them. They can be easily customized, and stock parts are less vs. a Celica. Civics are also faster in my opinion, if you have the proper set up. Celica's arent very impressive to me, and the engine performance on them in the mid 1990s were never impressive.
All in all a Civic is going to end up being more affordable on gas, and on parts. Not only that, they are wonderful to drive 8 ) (manual for the win!). Also I would recommend a 1995 or 96 Civic.