Many Naglers require the use of a Paracorr in fast F3.5-F8 scopes and 99.9% of binoculars are in that range. I would prefer binoculars with 70° AFOV and 20mm eye relief like the Pentax XW's than the Naglers that have about half the eye relief.
-------------------- Pentax PF-80ED
Meade 102ED APO
Orion EON 72
120ST
Apex 127
C6 XLT
CR150
C9.25
XT10
Zeiss 7x42 FL
Canon 10x42L IS WP
15x50 IS
12x36 IS II
Garrett Optical 28x110 HD-WP Signature Series
Oberwerk BT-80 45
Apogee RA-88-SA
Denk II Power x Switch binoviewer w/13mm Ethos, 20mm Pentax XW's, 20mm Widescan III's.