I have two Nash Guitars a TC-63 and an S-63, and love them both. The S-63 is an ash body one and had Fralins in it, they were a bit to sharp for my taste, currently has Sliders in it (which i love) and is my main Strat. The feel and playability of the guitar is amazing, and it has a sexy look and tone too.... Like so many, I've tried, bought and sold strats and strat style guitars ever since i started playing many many years ago... and though i cannot claim to be a full time pro player I've had my S-63 for years now and it is one of the best playing and sounding strat's I've ever come across... It all comes down to personal taste and of course the electric guitar is only part the equation but that said would recommend Nash's strats and tele's without reservation... great custom shop level guitars with beautifully done relicing at a doable price point.
I've also tried several of Lollars pickups (single coil and humbuckers) and have been extremely impressed by them all. My TC-63 has Lollars (amazing guitar) and i recently put a Dirty Blonde set in a Warmoth alder body strat (basically what is in Nash strats with Lollars)... sounds amazing: dynamic, vocal, and airy with a great character. For Lollar strat PUps I've tried the blonds and blackface... as well as the dirty blonde set, they were all very good IMO, with their own thing going on... strat through and through.