Hey guys - thanks for all of the help. I went ahead and bought the R300s in gloss black this morning. They should be here next week, and I'll let you know how they work out.
I decided on these because I came to the conclusion that I needed something less power hungry and with more bass than the LS50. I came to those conclusions initially because of all your guys' comments, so thank you again. When I compared the LS50 vs the R300 in a local store the R300 was a much fuller sound, as expected. I never ended up hearing the Reva 2s but given their size and specs I figured they wouldn't feel as full as either of the KEFs and ruled them out completely. I should mention that I don't have a sub.
I also never ended up hearing the SF Venere 2.0s, so I can't speak to those but I was very interested in them. Thanks for that recommendation too.