I reviewed ACE TV earlier. Right now I'm watching a perfect FHD stream of Watford vs Liverpool, which hasn't fluttered or farted ONCE since kick off. Day one. Huge server load. Tons of streams. Not a problem.
Long may it continue. So far the best I've used by a country mile... £2 for a 24hr trial or £10 a month for full package (aff link - cheers!)
Dont forget Epic kills it too with the HD.
You can get ipguys for 3.99 a month with the EpicGuys combo :P Can't beat Epic and IPGuys!