Reliable discs for Matshita SW-9581?




I have recently purchased a new computer with a Matshita SW-9581 DVD drive.

While it burns CD’s ok, so far I haven’t had any luck when it comes to burning DVD’s. It just doesn’t seem to recognise any one I try.

I was wondering if anyone could recommend a type of DVD disc for this drive? As I find all the different types available, a tad confusing. I still don’t get what the – and + is all about.

Thanks for your help.