I go with either the sherpa or the player. The face on the sidekick is large than the other 2. I used to paddle a sidekick and now use players. I prefer the slightly smaller face. I've found that they're more responsive. I've spoken to many people who have the same feeling.
Between the sherpa and the player, I'd probably go with the player. I haven't used the sherpa, but based on what it says on the werner website, the player sounds a bit more versatile for the type of paddling you're looking at doing.
In terms of length and feather, that's a personal choice. Some people prefer long blades, others short ones. I used ot have 191s now i've 194s. I liked both lengths but the 194s would probably be my preference. Both sets were 45 degree I think. I think the standard with Werner is 45 degree, but you may be able to get a different feather if you request it. Never had a problem with a 45 degree feather. there's a bit more wrist work on the 45 than a 30 obviously, but again, it's up to you and you're best going with whatever you find the most comfortable and the most responsive on the water.
hope that helps,
slapper