[Andy B]

Don't know who Dave Scharf is. Get 7CS4AP.

Stud high certainly has much lower variance for me than hold'em, and it probably has in general. But there can be big swings especially if you move up to levels where there are bigger antes and better players.

I would guess that if you're having huge swings in O/8, you don't play O/8 very well. Presumably, your opponents play worse.