Red button channels on Sky Sports 1/2/3 only work on Sky not on Virgin More HD channels
Virgin better:
Fewer HD channels but no extra cost Slightly cheaper overall Better channels on demand service iPlayer access
Reliability is mixed: Sky's main downer is bad weather affecting the signal. Virgin cable doesn't have this but they have more service down times. I had two occasions in 12 months where there was 4+ hours of no service.
Given the choice, I left Virgin and went back to Sky.
Had both V+ and Sky+/HD.Sky is better for:Red button channels on Sky Sports 1/2/3 only work on Sky not on VirginMore HD channels Virgin better:Fewer HD channels but no extra costSlightly cheaper overallBetter channels on demand serviceiPlayer accessR