
Can someone kindly give me a steer regarding rear speakers. I've read all the past threads and the issue seems to get missed each time.
Wanting to fit in with the crowd

, I'm looking at buying infinity reference 6510cs for the front from ebay (£71 incl.P&P) and am wondering whether it's worth getting a second set for the back. - Before you say it, I know that I don't need the tweeters on the second set, but the price is keen and it saves me some grief.
So, my questions are:
1./ Is it worth replacing the rear speakers?
2./ If so, why does no-one else seem to have done it?
3./ Would the 6510cs be a good idea? (any better suggestions welcomed).
Sorry for all the questions. I'll be hassling you about AMPs and SUBs before long I suspect, but I dont want to clutter up the footwell and boot just yet - I've only had the car since last Wednesday!
P.S. Big thanks to everyone who's posted about ICE so far, hopefully it's got me asking slightly less daft questions!