Lovin the 325.
I also am in your same position, 19 and going to college so funding is tight.
How many miles are on your 325? I have 105k on mine and havent had any major problems yet.
2006 325i 6MT|BC Flushstance Coilovers|Floss BBS Style 5's|Black Kidneys|Alpine Type R|Alcantara Wrapped Sport Wheel|Mtec V3 AE