I had a DDR/ Wilson (Combat Elite) framelock when they were first released - I have no idea if the design has been modified in any way, BUT the DDR was way too skinny and angular to properly fit into a human hand, was unfinished in my book in terms of having all sorts of sharp edges all over it and the knife just did not feel right. I sold it within a week of receiving it and was never happy with it.
I've tried several Cudas and was never happy with any of them and find the entire flipper/ trigger/ hammer idea to be pretty gimmicky - YMMV of course. The Cuda Max which while a neat idea, has never really worked for me. Neither did the custom version, again sold off pretty fast. Again, same problems, a large, flat, angular handle just is not how the human hand is shaped, no matter how much the marketing guys say so. Mr. Ralph has a large fan club, and I want to like the knives, but they just don't fit.
Sebenzas are pretty good to go right out of the box, have a beefier construction in a smaller package and fit most hands better. They have excellent ergonomics and are just wonderful to use in my experience.
If you want something with a guard to act as a "fighter" then get a fixed blade. I find the entire stilleto/ auto-knife looking guard design to be facetious on a folding knife. It's already broken and we are stabilizing it in place by locking the blade open at the pivot point, why try convincing yourself this is a broadsword? The guard is going to hook up on a pocket, whereas no guard will not.
As a reference point, I've got a Sebenza in my pocket currently and three more around the house.
You may wish to look at a Strider SNG as well - any Striders I have ever handled have always required the use of some emory cloth or other sanding device to remove a lot of unfinished edges on the handle, but I spent 45 minutes with one and a 3M sanding padwatching TV, and neing careful not to make a complete balls of the finish, what a difference that made. The knife is now very useable and handy, as well as being a really neat framelock concept. Light, too.
And, uh, Chris Reeve was a pioneer with the frame lock - I'd say that qualifies as innovative

Price on a new one, between $325 and $380 for a standard basic model, you can find them used between $250 and $300. SNG's can be had for about $325-400 new or secondary market.