What caliber are you looking at and what are you intending to hunt with it.

the Recknagel mounts always look good and work well but in my opinion make things to high and throw the rifle out of balance to much when holding in the hand. The lower you can go the better in my opinion.
One of the advantages of the M98 as opposed to some other 90 degree turnbolts is that they have quite a long bolt handle which due to the angle that it comes out of the bolt at allows you to actually mount them reasonably low without fouling on a the ocular lens.

If you need to you can always grind a slight scollop in the bolt handle so it clears the ocular bell, something many other gunmakers do as well including H&H and Rigby on the Highlands Stalker.

Matt.