R15 vs M10

[bears]

Already have a pair of M10's for front..CS1 for center..PSW10 for sub. Want to add another pair of M10's to rear but can't find a good price..However, R15's seem to be the same speaker with different grill..Can find them at a great price. Are they compatible? Should I wait for the M10's at a better price??? Or should I add different fronts and use existing M10's for rear?? Syetem used primarily for gaming...Xbox 360..Of course, I'm on a budget...

[Refefer]

If you're doing a budget gaming rig where the primary goal is to get decent sound for little money, by all means go with the R15's. The timber will be a little off, but it certainly won't be horrible. The R series in general sounds a little more laid back in the treble when compared to the monitor series, which I prefer, where as the monitor sounds sounds a little too "bright" to me.

Frankly, if it were me, I'd go for it. It should sound fine enough for what you want. Honestly I doubt you'll notice it all that much, if at all.