Recommend speakers for Music Hall a15.2

Just bought a Music Hall a15.2 integrated amp. I'm using Polk LS50s from the early 90s and am thinking about upgrading. It is a small space and I'm hoping to keep things inexpensive (you probably figured that out from the $500 amp!). Suggestions for speakers under $1000 much appreciated. And yes, I know everyone's taste is different but would still like to hear what people say.
Thanks