its all depend on the the blank media.
I used DVD+R Sony brand 4x speed and it burnt and read perfectly fine on all 3 dvd player (sony player, playstation2, and panasonic).
I got the same result with TDK +R media. Weird thing is, my ps2 only read TDK +R for 4x speed media.
Now I have 8x DVD+R media for Sony and TDK. Also some 8x DVD-R from TDK, looks like TDK have increased compatiblity as they increased the disc speed.
I tried GQ media and it have too much error that it\'s unplayable on sony dvd player and ps2. The newer panasonic dvd reads it just fine.
So, i can confirmed that ps2, sony stand alone dvd player, and new panasonic dvd player can read both - and + medias.
That means, blank disc media does makes a difference on compatiblity, not just - or + format.
Some brand name to recommend:
Verbatim, Sony, and TDK.
Avoid no names brand as they to suck and hence costing cheap. GQ is one of them. I haven\'t try other lesser known brand name beside that.
I bought 50 Sony 8x DVD+R blank media for $20.
The store Staples have blank disc media (TDK and Sony) on sales every now and then, such as from $25 down to $10 for 25 discs.