Sky can be good, but it really depends who they have on. They have a lot of "dinosaurs" in their team and I find their relevance deteriorates as the years go by.
Their anchors are ok with Simon, Natalie and Rebecca(?). Ted does his thing.
Their analysis team is hit and miss. When they have Jenson or Nico on then it tends to be pretty good, I thought Button doing commentary the other week worked really well. Nico brings some really good analysis, but I guess he is the most recent F1 driver. Karim, Di Resta and Davidson are a level down to them, but they are ok. I personally feel sorry for Naomi Schiff when she is on there, clearly out of her depth and just seems to be carried through any appearance. Hill and Herbert I think have had their day now, the sport has moved so far on I just don't see what they bring to the table any more.
I like Brundle, but don't miss him when he isn't on. I guess you could put him in the same catagory as Hill and Herbert, but he does get to drive some recent F1 cars and holds some legendary status I suppose. I do think there is better now though. Crofty I have never rated. He makes some glaring mistakes in his commentary. At least now you can see for yourself, but when he was on the radio I often felt sorry for those people who listened - they heard a different race to what was really happening.
I think one of the main problems with Sky is their team is pretty stale and could do with a shake up. Some new people with recent F1 experience to replace the old guard and a new commentary team.