definitely don't throw your money away on ebay you will probably need some tech assistance with old kit and more often than not struggle to get the support you need on ebay
Ive had from here before...
www.bigbrothersystems.com
(im like you adding links! how do you do that??)
Anyway they are on par price wise with some ebay kit but for professional latest tech kit and with support.
very helpful, UK based without high call rates. give them a call they really know their stuff, cost less than most places too and free delivery.
hope you get sorted!