Interesting... I didn't know Kelford did these until now...
Cam gears are the kind of thing that you don't change once you have them dialed in. So long
as you can read the vernier and remember that one cam degree equals two crank degrees either
brand will work. The Toda gears use an actual vernier type reading as on a manual vernier
caliper, and that can be a tiny bit confusing... check out their adjustment instructions.
I never had any problems with genuine Toyota timing belts or decent industrial belts (Optibelt etc)
from my local engineering suppliers. I wouldn't look at the ridiculously over-priced "racing" belts
unless I was building a full race engine. But if you like a big safety margin either of the brands you
mention will be fine. Just choose the colour you like best
Cheers... jondee86