I've already changed my plans ....
I'm currently using a Surly Long Haul Trucker as my winter bike .... the problem is that I'm no longer doing any sprinting / HIIT or decent cadence ... I'm just 'grinding along' .... The bike is heavy so I don't even try and better a previous Strava PB anymore ... The high cadence/sprinting is what kept me fairly fit for last year.
so, I'm now searching
ebay for another winter bike (budget £450 or less) ....
not sure what I will get, but I need to be able to use 700Cx28 tyres, mudguards .... maybe something with 105 or Ultegra .... good wheels ... decent saddle
There are some nice Specialized Secteurs, Cannondales, Treks etc for sale, some with nice upgrades but nothing that has excited me enough to pull the trigger yet.