I'm a big fan of the BM Grips. I've had a beater 555 for the last year and just recently bought an orange 551.
I've tried many other more expensive knives for an edc, but always find myself going back to the Grip.
I like the full size. I know alot of people like the mini-grip, but I just find it way too small to be comfortable.
The full size however fits my hand like a dream. It is a little thick, but it still carries just fine.
I stayed away from the Grip for a long time because I thought the scales felt cheap.
To be honest, they still feel cheap to me, but the knife molds into my hand and the texturing provives an excellent purchase.
The action on both my Grips is lightning fast. One handed deployment and closing isn't an issue.
My old beater has held up just fine. I bought it used a year ago. It's my hard use edc and it still functions like it's brand new!
The coating on it had held up very well. There's a few scratches, but I've been really rough on this blade.lol
For the price, I would say the Benchmade Griptillian is an absolute bargain and would reccomend it to anyone looking for general all-purpose edc. Here's a pic of "Ol Trusty".