Need some help choosing a 5.1 surround sound setup. I don't really know too much about them, other than the one I bought years ago is now a bit crap.

Some requirements:

1) Optical in - will be connecting the PS3 through it.
2) Decoding support for the main standards (DD/DTS I think are the main two I need right?)
3) Budget is ~£100

Any suggestions?