If you learned to shoot the way I learned to shoot (at the Chappo Flats Range, now Range 103 Wilcox) then you won't be happy with the iron sight 'options' on new rifles.
In the last week, I've gotten three adjustable peep sights off of e-bay. Two Lyman 57 sme's, and one Redfield #70. These are 'antique' adjustable irons, and I got every one of them for less than $52 each (two for $31 and $33, one for $52). Mine are for mounting on the right hand side of your receiver (Mauser, Springfield 03, Lee-Enfield), but if you use one of the other brands, you'll need one that mounts on the left. This does require drilling and tapping of your receiver.
These sights will deliver the goods, accuracy wise. They'll be instantly familiar to you (with your training). What you need to do, is find the RIGHT RIFLE, and then mount the RIGHT SIGHT on it.