I've been really pleased with this external DVD burner.
It's not the smallest unit you can but, but looks stylish - as long as you don't mind the matt silver finish. It connects via USB which works really well and compares to other internal units I have used and still use.
It install's quickly on both Windows XP and Windows 7 and works with all the burning software I've tried. It also works with all of the disc's I've tried ranging from cheap generic to high quality brand names with very few failures - which are down to the disc rather than the drive itself.
It needs an external power supply (supplied), so bear that in mind.
It can burn at a decent speed and certainly does what it says on the box. I'd recommend this unit as I've not had any trouble with it at all. It worked straight out of the box and installed quickly. Literally plug in and off you go.
Looks quite nice, is quiet in operation, burns quickly and connects easily and seems compatible with a vast array of blank media.