This has been posted many times before as has my answer:
When you buy a drive you need to look at burn quality, bitsetting, ripping ability, Lightscribe ability, and scanning ability.
First you choose the media you will be burning. Look at what is available where you will buy and what others are recommending. In the US, the best cost $30-$40 per 100. Middle quality is $25-$40. Crap is $15-$40.
Then you look up bitsetting and see if you need or want it. It only pertains to +R and +RW media.
Then you look at different drive ripping speeds and see if you need very fast, media, or if slow will suffice. This only pertains to pressed DVDs, more for dual layer than single layer.
You then read up on scanning and decide if you want to take advantage of seeing how well your burns are going.
Price is not an issue unless for some reason you feel you want a Plextor. Then you need to be prepared to pay 2.5-3X as much. Otherwise drives cost $40-$50.
If you decide you want to utilize Lightscribe, add $10-$15.
Once you take the time to go through these steps, you will be down to very few drives. Then you can see what others with experience say. The way I would post would be:
"I am considering buying drive X. Do any of you out there have any direct experience with media X, good or bad?"
Any of the top drives would do a good job on some media. The questions above will provide your answer for you.