*Puts his bestbuy hat on....*
Okay here's the deal. THere are both internal and external drives. If know little about computers or installing components, then get a external one. Though they're more expensive. THough if you can install hardware yourself or can find a friend to do it, get internal. It's
much cheaper. Even if you don't know how to install, the instructions are pretty easy.
Now about the specs:
FIrst off like shooraijin stated, it's best to get one that will burn DVD-R's and DVD+R's which are only be written on once. And DVD+/- RW are rewritable. They will allow you to add or subtract things onto a dvd disk much like a A floppy. Also there are two types of burners: single layers and double layers. Single layers hold 4.7 GB and the double layers hold 8.5 GBs. To burn a double layer disk you must have a double layer burner.
Next the differences between DVD+/-R:
DVD-R's were the first DVD recording format released that was compatible with standalone DVD Players (for dvd movies). About 90% or more of the dvd players out there will be able to read Dvd-R.
Also, DVD-R's from what I've been told are used for more multimedia purposes. DVD+R's are more for data storage. Though now, most stand alone (fairly current) and computer dvd-players will except both formats when dvd -- both dvd movie or data usage.
Though if you have a old stand alone dvd player, then DVD-R's are a safe bet. Most old dvd players were made to play DVD-R's. If your dvd player is fairly new then most likely it'll play both the +/- R's. Also some, even if they can play both the +/- R's will play one format better than the other. It really varies.
But, if you are just using dvd-s to back up data files for computer use, then it really doesn't matter between +/- R's.
NOw about the brands:
If you goto best buy stay away from Dynex. It's a cheap bestbuy brand that isn't really good. It's very cheaply made and has a tendency to mess up or burn out. Also, I'm not a big fan of Lite burners. Oh, and HP burners tend to be very selective with blank disks and the programs you are able to use with it.
The brands that tend to be the best are: Sony's, Toshiba, and Memorex's. Very reliable.
Two brands I hear are really good but don't know much about in experience are Pioneer's and Plextor burners. I've heard good reviews from many people.
Also price of burners:
I've seen some for about $100-$120 for internal (some cheaper) and usually the external ones tend to be about $150.
Double layers, sense fairly new tend to be a bit more expensive. About $120-$250 if I recall right. I've seen a cyber-home brand for $99.. but they are a really cheap brand and the product is just horrific.
>>Plextors tend to be more expensive. <<
Disc price:
Single layers are fairly cheap now, sometimes cheaper then regular cd-r at times. I see a different brand of DVD-disks on sale for about $20 for a 25pk. Not bad.
Double layers are more expensive. I've only seen one brand at bestbuy and we sell them in 3pks for $30. THey will eventually come down in price.
Also be cosiderate about the write speeds:
To fill a single layer up (4.7gb) it takes about:
2X approx 30mins
4x approx 15mins
8X approx 8-10mins
To fill a double layer up (8.5gb) it takes about:
1X approx 105mins
2.4X approx 44mins
4X approx 27 mins.
If you want to get the newest, cutting edge technology get a double layer. Keep in mind, double layers can also burn single layers as well, usually about the same the same speed it takes to burn a 4-16X.
For example: Some double layers will read:
Single layer write speed: 8X
Double layer write speed: 2.4X
Look at both the speeds when considering a burner. But if you just want something cheap that you can fit a few gbs of information, then Single layers are okay.
ALso, a bit random but the brands of dvd disks I tend to like the most and have the best luck with are both Fujifilm and Memorex. Also, I usually get DVD-R's, it's a habit and it's a safe bet.
Hope this helps.