Does the 328i have the sport package, at least?
If not I would go for the coupe. It's not the latest generation but after owning a sport package BMW, I would not want to give up the seats/shifter/steering wheel that come with sport/M sport...
2011 BMW E92 335i, 6MT, M Sport, Le Mans blue - Michelin PSS, Quaife LSD, JRZ RS Pro, JRZ camber plates, Eibach ERS, full M3 susp, custom toe arms, Powergrid end-links, brake ducting, SS brake lines, UUC SSK, ETS FMIC, ER CP, Perf. Exhaust, work by VAC Motorsports