I feel like I have a slight opposite opinion on restraints here! Being on the slim side I've never had an issue with The Smiler's restrains. They seem to have just the right shape to be comfortable on me without crushing. Saying that, I'm 99% sure if Flamingo Land had a eurofighter or similar ride then I'd be hating the things. Again, I quite like the B&M vest restrains too. Couldn't tell you if i prefer them over the regular OTSR such as those on nemesis, but it has been a few years since riding air/galactica as my last visit was before the reopening. Rita's are pretty bad though, not sure if that's the bottom bar or the actual OTS bit. I'm quietly hoping they'll one day fit the soft restraints that seem to be popping up in various parks.
Nothing is a bad as a volare restrain though, no arguments.