Go to http://www.newegg.com and type in Litescribe at the search to see what LS drives are available. I believe all that is out right now are BenQ and HP drives. If I had to chose, the BenQ wins big. For non-LS drives, depends:
Cheapest: The latest NEC or Pioneer 16x drives
Most Expensive: the latest Plextor
Any five of those should make you happy. Only bad thing is that the current LS drives don't overspeed DVD+R DL media (i.e. you are stuck at burning at 2.4x). http://www.cdrlabs.com has some great detailed reviews if you're further interested.