When it comes to DVD-Rs I stick to Verbatim and nothing else. They don't seem that expensive and I'm told I can expect no problems for years to come. On the other hand when it comes to Dual Layer ones Verbatim seem incredibly expensive. So I guess I'll have take the risk and try a cheaper brand.
I've tried some cheap Ritek D01 ones from eBay and they haven't been too bad now I'm looking for a cheap deal to get a pack of 25 and I'm willing to try another brand.