Well, for starters, you cant really beat the price. I got mine for a little over 40$ (thats with S&H) online. I played my first game with it yesterday, and here are the advantages it had over my stock barrel:
It was much quieter. Instead of the ussual pop pop I got outta my stock, this one had move of a 'wump-wump' low sounding noise to it(which is very cool)
It was a little more accurate
It was nice'n light
It seemed to be well constucted, no nicks or chips in the anodiziation(Is that even a word?), and it fit on the gun nice'n tightly.
And of course, it looks a lot cooler.
Bad? Well, I dont really know if this is the barrel's fault, but after readin all the reviews on this site sayin this barrel is as accurate as 100$+ barrels, I was kinda dissapointed with the performance I got out'a mine. Im not complainin or nothin, cause the accuracy is definitely sufficient for me, but there were some balls curvin occasionally and my guess (GUESS) is that I was gettin about a 10" shot group at 50' feet. Still, thats a definite improvement over my stock, and Im not really all that dissapointed, but I think some of the reveiws hype you up a little too much for this barrel.(note: I've only shot one kind of paint through this barrel though, so its might just be the paint to barrel match thats throwin things off a big...)
Barrel length?: 12'
What kinda gun?: Sypder compact 2000 w/expansion chamber
What paint works well?: Dunno yet, but Ill find out. So far I've only shot generic stuff through it, Ill have to try some more expensive brands though...
Worth the price?: Heck Yeah, this was definitely one of the best upgrades I've added to my gun, and it was also one'a the cheapest. Great bargain if you ask me.
How does it compare to similar barrels?: Hmm, I only have this barrel and my stock. I guess it shoots about the same as my brothers PMI 14" barrel(but mine is quiter, hehe), and if definitely out-shoots my stock.
Would I recommend it to someone else?: Hehe, what am I doin right now? Of course! I think that it is a GREAT deal for the price. I think that if you just bought a gun and are lookin for a nice'n cheap barrel that'll kick some a$$, buy one'a these. Great value, and good quality. Hard to beat.