Yes, the new products we have coming out will work just fine with the DA buffer - you do NOT need a rotary.

As for the introduction of swirl marks - they only come from physically touching the paint, either through washing/drying, use of a quick detail spray to remove light dust, etc. Unless you've got some holograms introduced by a rotary buffer before you owned the vehicle. I've seen plenty of dealer prep departments do a serious number on paint with a rotary, only to cover everthing up with a good glaze and then a few coats of wax. As the wax wears off and the glaze gets washed away, the holograms show up again. You can refill and hide over and over again, but they aren't going away unless and until you make them go away.