I tend to use -R rather than +R because I was told that the - ones run on more DVD players. Not sure if this is the case but everything I have done on -R has run on any DVD player so far.
Personally I find Infiniti to be rather good. I've got some Datawrite ones just now and I suppose they are ok but despite them being listed as 16 speed I've had to drop them to 8 speed or they fail so probably they aren't as good quality as the Infiniti ones.
I think I'll go back to the Infiniti ones when I finish these.