A similar discussion was recently had here....
http://www.ozmpsclub.com/forum/other...-car-next.html
If you can afford it I think the R36 is the nearest you can get to an MPS6 replacement. Noticed the SS is on your list. As much it pains me to say it, the SS is compelling as a combination family and performance car. Not as quick as an MPS but if you can get past the boganism and the iffy build quality there's enough driving satisfaction that you'll never get bored with it. And there's probably no other car (under $150K) that will get you to your destination feeling less fatigued than an SS.