From what I’ve been reading, most people think the original Metzeler’s were really poor.
Someone on here said, zoo’s refused to use them, because of the danger to the monkeys of slipping off
Opinion is split on the Dunlop D220 - standard on the new model bikes. Some seem to really like the Avon Azaro 45/46, but some really hate them

maybe depends on your riding style. Bridgestone BT020, Continental Road Attack (silly name

) and Metzeler Roadtec Z6 all seem to be liked by SV riders

I think that the Road Attack and the Roadtec Z6 are new this year. Bridgestone have introduced an improved rear tyre this year BT020NT (new technology.) Not much discussion on the Michelin’s and the Pirelli’s.
My research agrees with jonboy

there is little advantage in going for a sportier tyre. Apparently, sport tyres need to be run hard and fast to keep them warm and sticky on the road
Good luck,
Daz