I purchased this product not long ago, and have had barely any issues with it so far. There are a few niggles with the plastic side strip, which you have to bend accordingly to fix in the screws and it won't bend back into shape, looking out of place and gets in the way. The drive also gets quite hot on occasion, but makes up for this in being extremely lightweight.
I set up a folder called "_iso" which I copied all my original files into, and was able to run them from startup. The device is particuarly useful in its multifunctions. For example, it can be used as a DVD player, Blu-Ray player or as a hard disk drive.
Should you have to use the recovery disks, you'll find that it reinstalls in less than 50 minutes which is an added bonus. My drive didn't come with an Esata cable, but I believe this is not the case with all packages, so look at which you are buying carefully.
In conclusion, it is an excellent drive but there are a few small issues - particularly the lack of an Esata cable, but this can be resolved easily and cheaply.