I have a pair of 8x30 Swarovski SLC's that I really like but I noticed that on many occasions 8x just isn't enough.
I also have a Leupold 12-40x spotting scope that has been working pretty good, the resolution is nothing to shout about, but it is quite good. My eye gets really sore when looking through it for extended periods. Eye relief isn't very good.
I would really like to use a pair of high power binocs/big eyes to get rid of the eye strain.
I want to get either a pair of Swarovski EL's 10x42's or the SLC in 15x, I am leaning toward the EL's for weigh and their ability to use without a tripod.
If I put two doublers on the 10x I'll have a set of 20x bigeyes in place of my spotting scope, if I get the 15x binocs I will have a pair of 30x bigeyes with addition of the doublers.
I am going to be checking out Swarovski's new 65mm spotting scopes today. Who knows Swarovskis new spotter might eliminate alot of the eye strain. I don't really think it will completely eliminate it though. The new spotters got a good review on a good bird watching website. http://www.betterviewdesired.com