You're asking for
▪ "at least 20x" and
▪ "no tight eyebox" —
which depends to a large part on a large objective lens ("large for magnification") —
which is diametrically opposed to another requirement:
▪ "25oz" light
Just sayin'....
Hete are some models that fulfill some of your requirements, whereas I can't say much about some of your other requirements — I have not looked through them or tested them:
Hawke: Frontier 30 FFP series [No. 18540]
5-25x56 FFP
Reticle: Mil Pro 25x, gridded, no thick outside posts
$1050
This is Hawke's top line, with new turrets, I would expect reasonable precision.
Weight: 24.8oz
Locking Turrets | 0-Stop | 8mil/turn
Eyebox: Since it has a 56mm objective, the exit pupil is 11-2.2mm, so based on that at 20x you should have a fairly generous eye box
Hawke: Frontier 30 FFP series [No. 18530]
4-20x50 FFP
Reticle: Mil Pro 20x
$1050
Weight: 22.2
Other specs are the same as the 6-24x56 above.
Trijicon: Tenmile series
4-24x50 SFP
Reticle: MIL Red Dot [No. TM42450-C-3000007] | or MIL Green Dot [No. TM42450-C-3000008] | Calibrated at 24x
$1890
Weight: 25.7oz
0-Stop; Turn Counter; Capped Windage Turret
Maven: RS.5
4-24x50 SFP
Reticle: SHR-MIL Ret.
$1400
Weight: 25.5oz
0-Stop; Windage capped
I understand your quest for the ideal scope quite well. It has kept me up late at night.
Oh, look, it's already 0:30 on my side of the globe.....
Cheers,
Matthias