Futon is right, i have both a Ti Spaceframe and a Plus in the larger size. My Spaceframe has the old narrower truss which limits my tire choice. I find the Plus a better all round bike then the Spacey. It has more luggage space, is smoother and roomier for long rides and more planted, more stable and slacker for technical singletrack fun. The Spaceframe feels more like an XC racer in comparison. My Ti Spaceframe with normal size 29er tyres feels like it weighs nothing compared to the big rubbered, steel Plus.
My Spaceframe has been singlespeed for all of it’s 8 years and I’d expected to run the Plus that way too. However I couldn’t find the right compromise gear. I’ll be giving it another go this year.
Futon, I dont mind rain, mud or night riding but i struggle to find motivation in winter when irs all three. I’ll make a Stanmer Thursday ride again soon.