I have never heard of Enlight PSUs and can't find a review of one from that company on any websites that I trust.
It could be a good one or it could be a worthless one. I would stay away from it if it were me and go with a brand that I know well. Something made by Antec, Corsair, or Seasonic.
Unless you are confident in the quality of their PSUs, that is.
Just glancing at this Enlight Sniper 650 model specificationshttp://www.newegg.com/Product/Product.aspx?Item=N82E16817373004
I can see that the 3.3v and 5v amps are listed at 25 and the 12v amps are listed at 16 amps which pretty much means the PSU is nothing but garbage.
Fifteen years ago that would have powered the average PSU, but those numbers should be reversed for PCs operating in 2011. At least for the Enlight Sniper 650w, they never got with that program.
That is 1 for 1 on the bad PSUs scale, so you are rolling the dice if you go with the Enlight EN-TOP 650w.
I commonly use the example that you wouldn't put a Dodge Neon engine in a Dodge Viper you were planning on driving, so don't do it with your PC either. It would be sad if you blew up a $300 video card because you only paid 50 cents for the PSU.