I think you are putting the chicken before the egg, or the cart before the horse, or the... well you get the idea.
Regulator - What does your LDS carry and service? There are very few BAD regs these days. Some considerations are cost of parts for service, and budget.
BC - What kinda body type do you have? RU a regular sized guy, or someone who may need off sizing? Zeagle IMO makes the most custom sized BC's out of the box as you can put medium shoulders on a small BC. What style of BC do you like to dive? Jacket. Back-Inflate, BP/W?
Mask - what fits, period! I like the Cressi-Big Eye syle masks, and the Mares X-Vision is my mask of choice for it's low volume, wide field of view, fit, and I like a black skirt.
Snorkel - Get the biggest brightest one you can find, cause after a long day of diviing when you generally just leave it on the boat, it's easier to spot if it get's seperated from you other gear!
Fins - Some swear by Jets, some swear at them! Apollo Bio-Fins has been leading the pack for years at least according to ScubaDiving.
Exposure Suit - Depends on what you dive. I either do a 3mm fullsuit, or dive dry. If I can't dive it in a 3mm suit, I don't dive wet. Fit here like with a mask is the most important thing, and most 3mm exposure suits out there are good. IMO the high end wet suits generally cost more with little benifit other than maybe a cool logo, and recognizable brand name. I would however suggest super-stretch, ultra-stretch or whatever (names vary by brand) in a suit. I just makes it MUCH easier to get in and out of, and is more comfortable overall.
Computer - Most out there seem to be good. If you plan on diving Nitrox, make sure yours does that. I like the Aeris Atmos II. Very solid, very easy to read, minimal buttons, and user replacable battery. Fits the bill for me!
Side Note: Beware, folks that subscribe to DIR and Hogarthian ideals will have a VERY fixed recommendation as to what you should dive, and how to set it up. There is NO choice on configuration with this group. There is nothing wrong with this, but be aware that 90%+ of the worlds divers are not diving these configurations to the degree that a true DIR diver would suggest. I know tech divers that subscribe to some but not all of thier methods.
I also agree with Stephen that this may not be the best way to make gear choice. You need to figure out more of what you want based on your diving, your experience, and your personal preference. Once you have some things narrowed down to a few choices, then this group can be invaluable to determine what people like and why.