oh boy, what a loaded question.
my advice, if possible, dont buy something because its the cheapest - try to spend a bit more now so you dont regret your decision later on.
try before you buy, if a shop says "buy it now and if you dont like it then we can swap it for something else" find another shop. arrange a dive shop to have a few brands to try out in their pool before you hand any money over. go to a local busy dive site and see what others are wearing. hell, approach a few divers in the carpark and ask them-we're a friendly lot!. keep in mind that a dive shop is going to support their brands the most so if they rubbish a particular brand - check it out here and you will get alot of honest responses.
my prefered choice is zeagle bcd and sherwood regulator and ive traveled the world with them.
my BCD is a Zeagle Tech and i LOVE IT! (hubby's version of a sexy birthday present). It is weight intergrated, meaning i dont have to wear a weight belt as the weights are in a weight pouch and they sit inside 2 bcd weight pockets. So much more comfortable! its also rear inflated - so i dont get a chest squeeze plus, it just looks fantastic!!!
my old sherwood reg is 5 years old and still going great, hubby just got me a new reg and its also sherwood and im very happy with the product.
my current computer is a sherwood wisdom (christmas present) but hubby dives with a aladin air-z (he just upgraded from a air-x).
when looking at a bcd, keep in mind most manufactures make "women" bcd now so they are worth looking at also (zeagle zena and scubapro ladyhawk are 2 brands i can think of).
when buying your reg, you might be asked do you what a yoke or din valve, keep in mind that most resorts in the Pacific (fiji) use yoke valves on their tanks so if you buy din, you will have to get a adapter.
get the dive shop to show you all the options on a reg. i use the standard 4 hose combination but hubby uses a 2 hose combination-get the dive shop to explain these to you.
geez - alot of info and i know you dont have a dive shop near by at the moment so if you can pick up some magazines and read this forum for some more info plus check out scubatoys, zeagle etc sites.
cheers
LSL