I´m planning on buying a set of speakers to upgrade my H.T. setup. I´m low on cash, and I´m in Mexico, so there´s not much to choose from, not for a few bucks.

I found the r300 and r150 polk speakers. I read they´re a good choice.

My question is:

would you recommend to buy 4 r300 for R-L, Front-Rear speakers or should i buy the r150 for sorround?

I would appreciate any opinions.