Phasecorrect,I've had the Rega RS-1 bookshelve speakers,I liked them quite a lot, but ultimately they were too lean for my tastes.
I would recommend them, they're good.
I know Epos are suppose to be great, but I hear they are fussy with placement, and in my 11x22 room, they were not a good option because of placement concerns on the long wall.
I've never heard Proac, I would like to, I wonder what their traits are?.. I had some Spendors, they had a very nice mid, the model I had was too small and lacked dynamics, I bet there larger models are pretty awesome...I picked up some Jean Marie Reynaud Twin Signature edition speaks and I am enjoying what they bring to the table, They are VERY interesting speakers in build and sonics, sweet! They are music first, hifi second, a nice balance.