There's a bunch of crimpers on eBay that look identical to the CCS "Easy RJ45" crimp tool except they are about 25% of the price. If I only had to do a few jacks I'd probably start with that, it looks decent enough.
If I had to crimp loads of jacks then that's a trick question because I'd just insist on being bought patch cables. There's very few situations where I can think of having to crimp a plug onto a cable, maybe for video distribution where you're trying to limit the number of drops, or for wireless APs where you can't install the AP over a pattress box and put a keystone in behind it.