I actually really discovered them last year when I bought Like Gods Of The Sun from a friend (he'd gotten the digipak and sold his original copy). I knew them of course, I've had "As The Flower Withers" on tape for years, but I always kinda preferred Anathema and Paradise Lost and never really got into MDB, but I really liked LGOTS and then I got The Light At The End Of The World which I really like too, "Edenbeast" is a mighty song.
I got all albums meanwhile (except 34.788%...Complete, the new live album and some EP's) but I stil like TLATEOTW and LGOTS best though the other album are good too.
Anyway, to the starter of this thread, I'd get TLATEOTW first, cause it's most similar to The Dreadful Hours and you're most likely to like it (I actually think it's better than TDH).