Sorry got caught up in festive cheer last night 😀
For me the carbon is definitely worth the extra.
Apart from the fact I’m a tart, I wanted a bike I could do everything on including long rides, lots of climbing. The lighter weight just means I can do that more easily than on the alu version. Its pretty much a do anything bike with the CTD/Talas Shock and fork I can lock it out and it pedals pretty well and is relatively light. Drop the seat, point it down hill and it takes everything I’ll ever throw at it.
Never had the opportunity to feel the weight of Alu and carbon Stumpy side by side but its certainly considerably lighter than my mates Spicy 516 with a very similar spec.
Have to say though without a very hand PPI payout I may well have had to go for the alu as the carbon is a lot more.