This week I traded in my beloved BMW 323 for a new 07 250 6M/T with 18" XE package. BMW has just blown it (IMHO) in terms of design/styling and value in this category, and the Infinitis (except for the G35 coupe) and Acuras just bore me. I never thought a Lexus would interest me, but the IS is absolutely gorgeous--nothing else in the category comes close to the looks of this car (like what BMW 3 *used* to be)--and I can't imagine a car that gives you more for the money. The features and quality just never end.
BUT....
after driving it for 2 days I do have to admit that--although the engine and weight are comparable to my former Bimmer, there is definitely a slight compromise in terms of pep and road feel. Problem is, I will not buy an automatic transmission car, and the IS 350--ridiculously--does not come in M/T. If it did, it would have been a no-brainer. I love this car, have no regrets and hope/assume that I will just get used to it, but at least for now (only 2 days, as I said), I am jonesing a bit for that good old Bimmer sport performance.
I am also hoping that I can find an aftermarket power chip for the 250 to give it just the little more oomph that it needs, but so far I have not heard of any. Hopefully one of the mod companies will catch on and make one for us, as there is clearly a big market/demand for it (if anyone has first-hand knowledge/experience with one that might exist, *please* let me know!). another 20-30 HP (which is what most of the good chips will boost other cars) should give it enough of a pickup improvement (or at least the feel of it) to make those of us who really love to drive happy.
Finally, I will say this... the IS250 M/T seems to "like" 2nd and 3rd gears the best. 1st gear is fairly lame (which is why we won't win many stoplight showdowns), but it definitely wakes up in the next 2 bands. Unfortunately you can't stay in 2nd or 3rd forever, but enjoy them while you are rowing through ;-)