i would also highly reccomend the TDK DVD+R
burns at 8x in my 708a, they are RICOHJPNR01.
got mine at best buy 100 for $120, they seem fairly easy to find. hard to find good sales tho. got a ton of good burns, only coasters are on account of my compatibility woes in my system.
anyhoo they work in every dvd player ive tried, and my PS2....