Right ive basically got a setup like this: Pioneer VSX-520 AV receiver Cambridge Audio S30 Thats hooked up to my pc and other devices, only got one pair of s30s so a 2.0 setup currently. I have been aiming to pickup the S50 centre but im doubting CA quality now, speakers are generally a subject i know little in and its baffling to get a reasonably solid recommendation for X Y and Z so im hoping someone can help me!. I want to end up with a 5.1 setup, ive read that mixing manufactures isnt a great idea due to tonal differences so the S30s are able to be sold if i should leave the CA road, overall im looking to spend: £200 - £250 Front speakers £100 - £160 Rear speakers <£100 for centre speakers ~£100 for sub (is this way too low? no idea) I watch alot of films and music but film performance is a more important role for the system. Im trying to decide between bookshelfs for fronts or floorstandings as originally i had the idea of using S70s as the fronts and s30s as the rear when money was available, im just not sure how good the S70s really are when compared to alternatives in that price range. Im really stumped on this and getting a bit frustrated as im failing to learn adequately what i need to be looking for! Any help is greatly appreciated as i dont want to grab the S70s S50 and whatever the CA sub is if there are better alternatives! Thanks for your time. edit: Also as im looking to minimise costs (student, poor lol) im eager to look at the secondhand market which is another reason for me doubting the CA route as i cant really find any current series CA speakers for sale, if for example i know tannoy V4 are a solid choice i can then keep an eye out for them .