Custom Ti: Wittson vs Spin

Haven't used the open forum before, so be gentle.......

Am weighing up a custom Ti frameset for a disc brake roady with enough room for some chunkier tyres (up to 32, for potential Tour of Flanders/Paris Roubaix action - I cycled in Belgium earlier this year and my fillings were nearly shaken out of my mouth).

Have looked at stock bikes such as Kinesis, Sabbath and Enigma from the UK and then the SUPER premium Moots and Seven from the US. However, I think I'm going to go custom, as prices can actually be cheaper than compared to some of the stock bikes and I'm always one for supporting the underdog, provided the quality and workmanship is there.

Have spoken to both framebuilders and they have come up with similar price points: http://wittson.com/ and http://ridefullgas.com/lightning/ (both builders will do custom geometry, allow fixings for disc mounts, rack mounts and mudguard eyes as well).

Any thoughts/recommendations much appreciated......If there's any makers I have missed (I know of Mosaic custom frames, but don't have the money to throw at a Passoni, Comtat or Legend)