I run a Bassett low standard mount. I have to remove the rear sight assembly because the eyepiece won't fit between the ears even with the apperture removed.
I run a 50MM objective and with medium rings it just touches the handguard, so I had to file a little off the handguard for clearance.
The good thing about this setup though is that I don't need a cheek riser. I don't have ejection issues. The mount doesn't shoot loose and removal/reinstallation is a breeze.
If I went with a picatinny version things would be easier on me. I would not have to remove the rear sight or clear material off the handguard but I would need a cheek riser for proper cheek weld.
If you get the right version, you can use the iron sights too.
It doesn't really bother me to have to remove my rear sights. It takes me less than 5 minutes to remove the scope and reinstall the irons back to known good zero.
My next scoped M14 might just be a LRB M25 or a Sadlak Airborne mount.
Here's what she looks like...