fwiw I took the plunge (ahem!) and got a Garmin 910XT.
p.s the tracker is meant to be worn on your goggle strap, at the back of your head - so unless you have eyes in the back of your head .... (and on stalks!) glare isn't an issue.
A psychological disorder is: "Any personal construction which is used repeatedly in spite of consistent invalidation."
~ George Kelly
"The water is your friend.....you don't have to fight with water, just share the same spirit as the water, and it will help you move."
~ Aleksandr Popov