Hi,

polks,
can you tell us what you are using to drive them now?
and what budget do you have in mind?

also note that 300 real watts/channel are alot of watts...
you could go for a Rotel, a rb-1080, or a rb-1090, or a bryston amp, or a nad, or alot of others, if your budget allows you, you could try Mcintosh,

please give us more details,
Keep them spinning,
Bert.