G10 is the handle material and it is epoxy resin laminate of fiberglass reinforced nylon and you can machine it almost like metal and give it some "knurling" for better traction. Many people see it as "the best" handle material, considering all attributes incl value/price. Jimping are those grooves on the backside of the blade to give you better traction while cutting something. Both are great in "slippery when wet" conditions. Why don't you have a look at jekostas excellent A Primer on Pocket Knives thread... It's a good start to get a basic idea of what we are talking about and many terminologies are explained there. You can't really go wrong with any SRM, Enlan and Bee knives. Just a heads up, they are not really "completely" stainless steel as you are probably used to... they have some corrosion resistance, but it's better to dry them good after use. And 10-20 mm difference in size doesn't sound much, but it's a completely different class. The SRM 707 you mentioned in the first post is the sister knife to the CRKT Drifter.