Thanks very much for all the replies, very helpful. Think I may just go for it when I get the craving. My 10 speed 105 and 9 speed Sora are running smoothly and silently at the moment but they both have a few scratches - anyone know of anywhere selling any decent framesets?
In reference to the Swisstop pads that SRAM use - I have heard that these are better. Planet X were selling front and rear Apex brakes for around £7 each last year - cheaper than buying the pads separately!
The reason I have accumulated it before trying is for the sole reason that Amazon were selling the Force 22 shifter set for £17 the other year - yes really - check out the "found a bargain thread" and it's been built up because of that.
This doesn't show that price but does show when they went down last year to £112.61
https://uk.camelcamelcamel.com/Sram-Road-Force22-Shift-Brake/product/B00CLCBSJC
If I didn't pick up that bargain I wouldn't be fussed at all about going 11 speed. Appreciate all the replies and hopefully steered a few people in the direction of the bargain thread because they can be had!