IMO the Dime is garbage. I got one of the originals and the pliers failed cutting some thin, soft wire. It appears to be a design flaw as my LM Squirts, IDL T5 and mini True Utility pliers have handled nearly all the hand strength I can muster. It has really put me off of their brand as they haven't redesigned or discontinued a product that wouldn't stand up to the hand strength of a three year old. Leatherman gets taken to task for certain design issues, like the cuticle poking flat drivers on the Juice (which I consider to be largely user error, as it is simple to come at them with the side of your nail) yet Leatherman tools are generally quite rugged. I've almost pulled the trigger on a bladeless MP600 a few times but my experience with the Dime makes me back off each time. A company which knowingly sells a product with a gross design flaw is not one I want to do business with.
The bladeless 600 has the crappy carbide cutters - I'd steer clear of those. Get a 600 that has standard cutters (be it blunt or needle nose - whichever is your preference), and modify it yourself. The 600 is a good tool. I have two of them (both modified). Like most tools out there, it has it's little niggles, but they can usually be ironed out with a little simple modding.
Oddly enough, your "A company which knowingly sells a product with a gross design flaw is not one I want to do business with
" comment is how I feel about Leatherman. Personally I have had more disappointment with LM, but partly that's through having to pay a premium price for a tool I don't like. I'm not completely sold on everything Gerber, and there's a lot of their stuff I wouldn't go near based on past experience, but I do like the 400, 600, Diesel, Balance and EAB utility knives in their current lineup - and I personally have a Dime on my keys from when they first came out, and it's still working fine. As for LM, the only thing I would buy if I was starting all over again would be the Wave. I do like some of the older models, but I don't consider anything else in their current line up to be worth parting with my money (both in terms of design and QC). We all have our different acceptance criteria though