hi Josh, and welcome to AVS
I think you should take a look at what HSU has to offer. A pair of their bookshelf speakers... they have a B-stock pair for $324... very good speakers, IMO. Even without a sub, they are very capable for most music. They will keep you happy until you are able to add a 'real' subwoofer.
Better to buy quality pieces, one at a time, to build your system, than to settle for less all-at-once.
Ascend Acoustics also offers very nice speakers, and a path towards a very nice, and very capable full surround system. Point being, buy quality once, versus junk you'll want to replace.
Either option will be a huge step up from that Samsung HTIB..
mods, can we have a 'dislike' button ?