Experiences with 15-45 x 65 Delta Titanium or Leupold SX4 Pro Guide spotters?

[Chris-NZ]

I've decided I want a mid size spotter for range use and the occasional deer trip. Already have a full size Kowa but it's heavy and not fully waterproof.

Interested to hear what users of either of these have to say about them.

thanks

ChrisNZ