The Vantec one and the Sunbeam one are fairly different, but esentially do the same thing: the vantec uses pulse width modulation to vary the voltage so there isn't much heat generated and the Sunbeam one seems to use a simple variable resistor circuit to adjust the voltage. This causes a lot of heat as you can see from the big heatsinks on the Sunbeam model. I'm not really sure which one would be better, but like i said in my earlier post, the vantec one i got started smoking only after a few minutes of operation. I might just have gotten a bad sample or something. The main reason i got the vantec one was because i thought it looked a lot cooler with the blue leds, and all the reveiws i read said it worked great. I just hope i got a dud, cause i dont' feel like paying return shipping and a 15% restocking fee if my replacement does the same thing the first one did.