The is and es are only two-door models, and you can buy a 325i coupe.
325, 325e, and 325i are all sedans (save the aforementioned rare 325i coupe).
Takes my four-door 325 9.2 seconds to get to sixty. Etas are a good bit slower. And really don't get that much better mileage. Automatics kill power, speed, control, and gas consumption - there really is no reason to get one, but I would recommend an i-spec if she can afford the gas and insurance, which I can't. Eta (M20B27 2.7L) - 121hp @ 3250, 170lb-ft. @ 4250, redlines @ 4500, fuel cutoff @ 5300 (horsepower was bumped up to 128 after September of 1987; the Super Eta). I-spec (M20B25 2.5L) - 168hp @ 5800, 164lb-ft. @ 4300, redline @ 6800, fuel cutoff @ ~7100.
325i, 325is - M20B25.
325, 325e, 325es - M20B27.
Four-door E30s will forever look a gazillion times nicer than coupes. Two-doors just look so puny, like BMW didn't finish making them - they need two more doors.
In my opinion.