this question is probably as quick as it is stupid, but: On RS they advertise the MS905C Avant (£120). On Peter Tyson they advertise the MS905A (£same). I saw a 'for Sale' thread here from a while back where someone was selling a 905C described as 'not the avant'. Main question is: What is the difference between the Avant and non-Avant? Can they be told apart as simply as whether it is labelled 905C or 905A in listings? I'm planning to pair a 905 with a 309 sub, from a DSPE800. Rest of the speakers are a bit of a mishmash (Rogers LS4a front L/R and wharfdale diamond 7.1 rears) but this will improve as budget allows... seems like the MS will be a reasonable tone match for the LS4a powered by a B1 amp (relaxed and transparent).