Just bought a pair of Monitor Audio RS5's and I'm looking to get a centre speaker to go with it. Choices are -- MA RSCLR (secondhand) this would be the obvious one, MA RXCLR (new) , and MA GSCLR (secondhand) recommended by David from Frank Harvey HiFi (thanks) . This will be the last upgrade for a while ( thought the wife wouldn't notice the new RS5's being swapped for my old Missions but she did!! [:$]) which should I go for bearing in mind that 2 of the 3 are on an auction site and they both finish very soon?