That's so cool! I don't have a +2 to test it on myself (I relied on emulators to test all the various machine revisions).
Yeah, I relied on ZXSpin (or Spectaculator) for years myself. Last year I decided to get a bit of the real hardware in the house - and couldn't stop: I now own a ZX Spectrum 48, ZX Spectrum Plus, ZX81 and a +2 at the moment. A grey +2 (modded for external cassette players) is on the way... :D From time to time there are affordable offers (most offers are way overpriced though). But it's something very different to experience the games on these real machines, more conscious, more fulfilling. And the scene is so lively and active it's a real joy to be part of it.
Thank you for developing that gem!