Here's a recent post I did on another forum about this very subject.
I wanted to replace the Daystate Airsteam Reflex MK6 on my Wolverine so I went and tried a few at Wirral Guns yesterday as they'd just had a new batch of the Belit Mini's in. Below are the ones I tried and my marks out of 10 for them.
HUGGETT BELITA 1/2" UNF SILENCER - Length: 120mm - £75.00 - 6 out of 10
HUGGETT BELITA MINI 1/2" UNF SILENCER – Length 90mm - £55.00 - 4 out of 10
SWIFT STUMPY SILENCER - Length 138mm - £45.00 - 8.5 out of 10
A&M TITCH SILENCER - Length 115mm - £39.00 - 8.5 out of 10
I ended up buying the Swift Stumpy.
I'd gone pre-determined to buy the Belita Mini but I just couldn't believe how poor it was which was also a big surprise to the guy behind the counter and another customer in the shop as he said they sold out as soon as they came in to stock but that I'd been the only person to actually call in and test it against the others.