Ok, as I understand it, the 2629 and 2630(becket) are ratchmatic (load sensing ratchet) no need to be able to reach the block to turn on off the ratchet. Yes carbo is lighter but also SHOULD be easier to use.
From the harken website
http://www.harkenstore.com/uniface.urd/SCCYSPW1

- Ratchet senses load and engages automatically
- Shifts seamlessly between ratchet and light air modes
- Adjustable ratchet engagement
- Free release under light load

the 194 and 2194 (hardest to adjust the angle on) have a on/off switch

This is why I am going with this block price is only a small percentage more.

Sam

[b] Sail Like you have a Pair