£10 wasn't meant to be an exact price, I should have stated including P&P as you'd get them cheaper online, most high street shops will probably rip you off on price anyway! You could see if any mates have any DVD+R DL they have bitset just to try!
Not sure of a player to recommend, I've got a cheap ASDA Pacific 1002W, plays my DVD+R DL perfectly, except the sound has stopped working on it!! I used to have a Kiiro 838D, beautiful little player, auto sensed region and NTSC/PAL making life easy when watching discs from any region and was Macroviosn free as well! But that player sadly died, never found anywhere selling another one as Kiiro themselves died too I think
So if you do go for a player, auto sense is a godsend. Divx should also be supported as that is a very popular format too, it must also cope with all DVD formats: DVD-ROM (obviously), -R, -R RW, -R DL, +R, +R RW and +R DL and CD Formats (jeepers, what's a CD?). I don't go in for Home Theater, I hate all that surround sound stuff and the main reason I don't go to the Cinema anymore, so if you must have that it needs to output all the formats your disc has: Dolby 2.0/DTS/5.1 or however many audio formats there are nowadays!