I did a review of 1/4" ratchets on my
blog
Depends on what you are doing with your ratchet. If you are a pro, probably Snap-On is your safest bet but I would take into consideration which tool trucks service your shop. That is too often overlooked as a factor in buying tools. All the good companies make a pretty decent ratchet.
This is my THL72. It is tough as heck. Never felt like it would even break a sweat, but pretty pricey.
The bang for buck king, in my opinion, is the Gearwrench 81224.