2.2 owner here & more than happy.
My other car is a 4.4 V8 & that replaced an RX-8 230. I have driven both towards their limits when & where appropriate & safe. I don't rag my cars, (& always try to keep revs sensible until warm), but I enjoy progressive driving when the mood suits.
I have driven a few 2.8's & wont lie saying that you cant tell the difference over the 2.2 - then again a 3.0 is faster than the 2.8 & so on.......
IMO a little more thought required to briskly pilot a 2.2 in the dry than a 2.8 when aiming for twisty A or B road pace. For me the 2.2 seems well matched to the car - Just feels right. 2.8 may give the you a little more to think about in the wet albeit I have only driven a 2.8 in the dry so treat my comments accordingly.
I sought a 6 cylinder car for the smoothness & only started looking at the 2.2 due to lack of decent 2.8's in budget. I hadn't totally ruled out prefacelift 1.9 & would have bought the right car for money if it was around at the time. 140HP engine on prefacelift is pretty reliable & can entertain. Same engine featured in the E36 318is & 318ti compact. Sought when new & still a following now.
The Z3 2.2, (I have driven two), sits alongside an X5, (I drove a few), so sensible for me to avoid a second car with higher purchase & running costs. The Z3 is officially my wifes car & I suspect my fondness of the Z3M Roadster is greater than hers as she isn't hugely into cars. Despite my secret liking for the Z3M Roadster I have never been priveleged to own or drive one - perhaps I'll take a forecourted example out for a test drive sometime.
Despite my, (untested), admiration of the Z3M Roadster I suspect the 2.2 is a slightly calmer car to live with day in & out than the Z3M....Perhaps others, (hopefully including whiteminks), will comment further on this as they are different cars in may repects.
If not in a rush - Be honest with yourself re Budget to buy, sort any niggles, maintain & insure. Also be honest re your expected driving requirements. Then ideally go & drive a few decent ones with various engine sizes.
Initial admiration may be based on larger engines but drive them a few miles & see what you think you'd want to live with daily.
As with any car a slight engine issue can mispresent a car. On Z3's if tracking & bushes need attention you might not fall in love to start with.
Oh I confess that I used to have an XR2, an XR2i & an 2.9 Sierra 4x4. There were a few good old Faster Fords.
BMW or Ford - IMO the biggest driving factor = YOU !
Good Luck - whatever you decide
