Oral beta-blockers are preferred in pts w/ with CAD, HF due to systolic dysfunction, and in pts in whom the ventricular rate increases inappropriately during exercise. BBs increase survival in CAD and HF 2/2 systolic dysfunction.
An Oral non-dihydropyridine CCB is preferred in pts with chronic lung disease and in pts who do not tolerate a beta blocker.
Verapamil has a somewhat greater blocking effect on the AV node than diltiazem.
For doses for chronic rate control, see the middle column of this table, here.