I'm sure you are going to get a lot of opinions on this, but it depends greatly on what you'll be using the knife for and what size & shape your hands are.
That being said, lots of people will probably tell you that you can't go wrong with the mini-Grip. I don't have a single Benchmade, but I hear they are really good knives. However, I would personally not buy a knife that has a gap between the handle and the base of the blade. That's the best part of the edge if you want both power and control. Besides, I grew up with knives that have no gap and no fingerguard whatsoever either, so that's what I'm used to. I love knives with finger choils, though, so I'm partial to certain Spydercos. Ok, so I'm biased. I'm not, however, meaning to start a Spyderco vs. Benchmade debate, because Spyderco has it's share of models with handle-blade gaps, too (e.g. I wouldn't buy a Delica either).
With that in mind, I'd recommend something like a Byrd Meadowlark (with a G-10 handle). The Byrd knives are really good bang for the buck, and I have a G-10 Meadowlark and it's a good knife. Especially for the price.