I normally cut the B&M to a 9 1/2" version. It has crazy short throws to begin with, so you do not have to go to 8 1/2". Most people really like the short throws. In stock configuration this is an 11" shifter.
The TRD SS shifts a little easier into reverse that the stock arrangement.
If money was no object, I would go B&M (if you can find one).
My second choice would be a 9 1/2" TRD SS.
The best choice on a budget is a 9 1/2" with an URD. I used this combination until I got my T56. I was very happy with it.
I have some TRD SS in stock in both 8 1/2" & 9 1/2" lengths on sale this week end.