The TIR reflector works better for me because I don't have to recharge my batteries or wear a power cord. I just tape them on top of my wireless headphones and i'm done.
I used freetrack for years with the ps3 cam. I've made my own clips, bought, broke and repaired the Tir Clips. Now, instead, i'm using TIR5 with the reflector and have had much better results all around.
Making your own clip is fun and cheap, but can be frustrating.