I've ridden the Mt-10, and it's a fantastic engine. All you get on the SP is the colour dash and the electronic ohlins - which isn't worth £3k more and you don't really need the electronic stuff on the MT10 - it's not a touring bike, it's not a commuter, it's a hyperactive jack russell pumped full of steroids which will kick you in the balls then do a burnout in your front room
Nearly £14k puts you in the range of some of the big boys. A 2017 KTM 1290 Superduke is £13,999. No contest IMO.
As an £8-9k almost new bike then a standard MT-10 is a bargain however.