I just bought one! from revo in daventry, gained 20bhp... Theres no drone. its developed properly. my exhaust fitter says it has better gains than the milltek on the dyno (Im making 237bhp on a stock map with evoms intake...), costs nothing compared to the milltek. Sounds amazing, and you think stasis/revo can't make an exhaust? the reason they're cheap is the dollar to pound conversion rate.
I love it. daily driving theres 0 drone all day, as soon as you put your foot down people know about it. Thats how it should be!
I had some issues with fitting the tips didn't line up but was sorted by my exhaust fitter but its very minor, the fit and finish of the welds and v bands means it takes 30 mins to install. perfect exhaust really I think.