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I'm happy with my Pro Ones and reckon they would be a good choice for the race tyre. I've not had any disasters with them yet and just a couple of punctures that have needed 'worming'.
I too am looking - albeit not that actively - for something around a 32mm to convert my commuter so will be interested in how you get on. And will similarly post up any progress I might make.
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For the 32mm I'm hearing positive chatter about Maxxis Re-Fuse.
http://www.maxxis.com/catalog/tire-511-re-fuse
http://www.gravelcyclist.com/bicycle-tech/review-maxxis-re-fuse-tubeless-ready-adventure-tire-700c-x-40/They might be a little tricky to source in the UK but it shouldn't be impossible.
I sometimes dream that a bike geek somewhere on the internet maintains a list but I have yet to find it. When I looked into it - very briefly - I didn't get much beyond Schwalbe, IRC, and Panaracer. And now Maxxis.