What is your defintion of streetable? If it is- better response, low end power, and better fuel economy the Cobb reflash is all of those things. Also, more ponies than you'll get with a MBC, also safer on your engine and turbo.
I've heard a number of people going from MBC to Access ECU and loving the difference. I understand the "too many places to spend money" thing though. My hobbies all cost lotsa money.