Don't know about the xl but made a recent purchase of and xl2. Was out yesterday and can resolve thumb size branches at 1000 yds (skyline, just blue sky background) w/my left eye from 16 to about 30X. Mirage was too much above 30X.
With my right eye I couldn't see squat but that's the eye's problem not the spotter.
Positives are rubber armor, sliding sun shade, the "sight" it accurate, bright, clear, good resolution.
Negatives are its a bit heavy and the eye piece rubber cover that snaps into the front lens cover which in turn snaps into the bottom "sight" grove will fall out.