Welcome from South Wales. The flash won't release any more power, some complain of a jerky throttle and a re-flash sorts it out.
The S10 is a real grower, its never going to set your pants on fire compared to bikes in a simar price bracket but as you've heard, its ultra reliable and will never fail to put a grin on your face.
I had the chance to swap my 2016 for a KTM 1290S without costing much, such a fast bike but it felt flimsy compared to my S10 plus there are under seat heat issues and the chain.
I tried a Strom 1000 back to back with an S10 as I owned a 2006 Strom, the Strom felt lighter and more flickable but I'd read enough to know the S10 would grow on me and it really has. The only bike I'd consider swapping it for is a 1250GSA and that's only because I love the look of them, I certainly couldn't afford to run one.
As you are in the UK have a look for an XT1200 ZE, they have really useful extras over the Z other than just the electronic suspension.
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