I am planning on reserving a few apricots for spring shipment and have been agonizing about rootstocks. I am ok with some pruning (but it would be nice to avoid having to do a ton of summer pruning) and definitely do not want my trees to "runt out." I don't plan on letting the trees get taller than about 8 feet (well, maybe 10 ft in some cases), so perhaps Citation vs. Lovell is the way to go? Bearing fruit at a young age also sounds good.
Planting site: Full sun on a gentle southwest-facing slope. Soil is heavy clay on which drainage is probably not the best (will plant on a mound a foot or so high to improve access to oxygen during heavy rains).
Cultivars: Tomcot and Puget Gold (Raintree says P.G. is a natural semi-dwarf at 15'). Maybe one or two others to ensure pollination. Still tempted to try Robada and possibly Orangegold.