For what it’s worth- I love mine. Go to bike for me (despite having some other nice metal in the garage). Very competent bike and love the geometry. I do about 100-120 miles a week on it of mixed riding. Originally bought as a winter hack, but that soon changed.
I did the same thing- sold off everything and built it up as a frame only. Very pleased. I opted for the Whyte because the geo seemed spot on. I haven’t seen anything out there that compares for this price point. I’ve built it up with Sram/Shimano 1×11, Pikes, Hope hoops, dropper and wide bars. Perfect. I think the whole build is around £1350 and perfect.
With the Whyte 2018 range just being released, you might get a discount on the 529..
Either way, worth it.
[Renton has a large frame sitting in his garage. Whether he’s selling, I don’t know..]