As a long time user of Media 100, I had the same question. Media 100 or FCP. More folks were switching to FCP. The when Media 100 HDe came out on with the AJA board, I decided to buy both M100 HDe and FCP Studio. I bought a G5 Quad, (refurbished) an apple cinema 30″, added a second hard drive and created a dual boot system.
In crunch time I’m editing on Media 100 HDe. On down time, I’m editing on FCP to learn the system. I have to ttell you that I’m very pleased with how it’s working so far, with minor issues.
Good luck in your shoping. Hapy Holidays.
Greg