Thanks for the write up, OP. Having driven a 128i as a loaner when I had my E92 328xi a little while ago, I was really annoyed with the same gripes you've had with the E82. Glad to hear the M235i doesn't disappoint. Might end up being a future purchase for me, assuming I don't get an M3 after I'm done playing with my 335.
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E92 '08 335Xi 6AT - Cobb AP3 Tuned by MAC Autosport, Original Prototype Xi DOCRace 6266 Single Turbo Swap, VRSF CP w/Synapse BOV, VRSF 7" FMIC, BMS Cowl, H&R Coilovers, Renn Motorsport RS-51's, Stoptech Stage 2 Slotted, xHP Stage 3, Earl's Racing Oil Cooler, Turner Boost Gauge, M3 Lip Spoiler.
Standing Mile Record Holder for Xi over a mile high: 168.2MPH @ 5512'; The Colorado Mile hosted by The US Mile.