To me, it largly depends on what you want to do with it.
If you're looking for a really nice looking gun, you might be better off holding off for one of the commercial Browning guns and not a surplus gun. I am partial to the commercial Mk III guns as well as the Practical model, when you can find it, but these will cost you more.
If you're looking for a good practical carry gun with a minimum of fuss and bother, you could do a lot worse than one of the Mk II or Mk III guns from Coles with the factory extended safety. Reason being, the sights and factory extended safety are pretty usable as is. The Mk III's are alleged to stand up to +P ammunition better, but there's some debate about that. Jerk out the magazine safety and clean all the grit out of the action, and the triggers are generally satisfactory without a lot of fuss. If you go that direction, the bore condition is generally pretty well described in Cole's listing, and personally I'd spend the money for a better bore.
If you're wanting really nice sights, a better trigger and safety, and a better finish, then by all means go for one of the FEG guns or one of the lesser grade FN guns, and have at it. You can send the slide off to Novak for new sights and get it back in a couple of weeks, last I heard, and it doesn't take a genius to put better trigger and sear in one of these things.
You should figure on a new spring set for any of the surplus guns, right off the bat.
Personally, I found there is no such a thing as owning one BHP. I think everybody needs at least one good carry gun they're not afraid to scuff up and use, and at least one other really nice one to take to the range on warm sunny days to have fun shooting and make other shooters green with envy. Preferably two or three of each type. But that's just me. Your milage, it may vary.