I have no idea how I'm going to write f i f t y words on this barrel but I'll try.
This gun made my old spyder (Compact) and my new one (Flash) so much more accurate than they were. This barrel (14 inches) will but the paint where you want it. You can't go wrong with the price you pay for it. I payed 40 for mine. I don't think it quited my spyder, but what can? Seriously.. :-S The porting on this barrel is massive and people complain about it.. but I love it.. thats what makes it accurate.
If you don't want to spend a lot of money for a barrel.. this is the one for you!! $$40.
you seem to be confused about the whole "rating system". the numbers (1-10/10) reflect on how good the barrel is for the money it cost. the high quality barrels may be better than the whisper, but they are also much more expensive.