Assuming you are referring to the RP6 G3, these are one of the bigest sellers in this sector of the market.
They are well made, reliable and go very loud.
The sound though is heavily hyped, somewhat in the 'boom-tish' style and overall a little uncouth. Great party speakers though.
You can do better at the price if your intention is to use them for hi-fi, Presonus, Yamaha, Mackie and others make more refined speakers that give away little away in terms of loudness. A little more cash gets you a lot more speaker though, the Equator D5 is a cracker, at a shade over £400