Fins: Mares, aqualung, scubapro, apollo, atomic, tusa
Masks: Atomic, mares, scubapro, aqualung, cressi, tusa
BC's: Aqualung, scubapro, dive rite, halcyon, DSS
Wetsuts: Henderson, scubapro, o'neill, pinnacle, body glove
Regs: Scubapro, atomic, apeks, aqualung, sherwood
Computers: Atomic, suunto, uwatec, oceanic
For just about any piece of gear you're considering, you can just type it into google along with "review" and you'll be able to find information. Also, you can ask questions in forums such as this one, as well as check out sites like leisurepro.com, scuba.com, buzzillions.com, etc. Realize though, that if you're looking for absolute/concrete conclusions you won't find them (start researching split fins and you'll see what I mean
).
I would advise you to steer clear of Akona. Their dive bags are pretty good, but I've hated every other Akona item I've purchased or tried. Also, Sherwood makes pretty good regulators, but they don't seem to make anything else particularly well (Sherwood and Akona are the same brand).