Speaker vs. Room Size

Need advice on type and size of speaker for room size.
Room: 10'X 14' X 7.5'H. I mostly listen to "unplugged" style of music and some rock. I don't have a lot of money to spend but I don't want that standing in the way of excellent sound...! I hope to purchase the speakers and build the rest of the system around them. I live in an area where it is hard to audition so I need to narrow my search. Much thanks for any and all help.

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