I use a Wildcat Evo on my .204. Never bothered with the bushing. No issues with barrel getting marked and a very effective mod.
I had a jet-z on a .233, couldn't fault it. Heavy though, but if only for range use that's not an issue.
You can't go wrong with either but the Wildcat is a few £ cheaper.
PS As mentioned above, people in Wildcat are very nice to deal with.