I've been looking at several uCs, in particular the Cypress Semi PSoC5 system for the system-on-chip functionality and the great toolchain, but also the very cheap TI Stellaris series. But there are so many highly capable products out there these days, it's hard to know which one is the best; I feel like a first-time computer buyer trying to choose between Mac and Windows without really knowing much about either.

Are there any resources you'd recommend for people trying to choose their development platform? I have specific reasons for liking the cypress system-on-chips (massive i/o, extensive software config capabilities, toolchain support for my intended application of audio/MIDI), but it's hard to size up all the different options.