Default [Q] unrooted rom recommendation

Can anyone recommend an unrooted ROM for zoom.

I want to use Skygo app in UK but this will only work with unrooted Tom.

I am currently using CM11 nobigpart but all attempts to cloack root have failed.

Any recommendations gratefully received. TIA.
Andy K.
HTC S620(Excalibur) > HTC HD2 (Android MIUI) > Motorola XOOM MX604 > Samsung Galaxy S2