Well, I'm definitely what would be considered a newbie. I've got this one, a couple of Kershaws, and a Smith & Wesson that I found on the San Diego Trolley about a year ago.
Aside from Kershaw, what other brands might I look at in the sub-$100.00 range?
Can't answer your original question, as I only have a couple CRKTs. I have the fixed blade C/K Dragon, which is a design meant specifically for defense/combat, cool looking but not something I carry(I like the design hence why I bought it, but...a fighting knife isn't something I have any need to carry), and the Premonition which is a nice sleek $20 flipper, seems similar in quality to Kershaw's $20 budget line but I've only carried it a few times so haven't tested it a lot. I do wanna get a Ripple though, just haven't tried it yet.
Now, as for good sub-$100 knives, Kershaw has some great choices indeed. Spyderco also makes some great ones...the Native, Manix 2, Endura, Delica, all quality and all sub $100. Cold Steel has some good ones, especially if you like large bladed folders(Rajah 2, Voyager XL, etc), but even their normal folders like the Recon 1 and the smaller Voyagers are good sturdy beater knives. They have some decent fixed blades as well, if that is of interest. Opinels and Victorinox Swiss Army Knives(SAKs) are time tested classics and very affordable as well. Buck has a lot of sub $100 stuff as well, both folders like the Buck 110(you could even get a spiffy 110 from the Buck Custom Shop and still come in at under $100 depending on what materials you pick) and fixed blades(ie Buck 119 Special). Benchmade has a few in the sub-$100 range, the Griptilian and Mini-Griptilian being popular choices.
Are you only interested in folders/EDCs, or are fixed blades of interest to you as well? If so, the classic USMC Ka-Bar can be had for $60-70, and you can get a Mora(classic "bushcraft" knife) for very little cost. Condor has a lot of good fixed blades(and machetes) ranging from $30-80 and are well worth looking at if you're into "bushcraft", camp knives, machetes, or other "outdoor" type knives.