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So we decided on R6L with Wellness, NeckMasseusse, and Trio. These three seem to cover most of the jets we were interested in ... and paying another $1700 for A6L seems like a stretch to get an extra seat, improved control panel, and an extra jets button (we do not care about lighting at all). I wish there were better choices in the shell material/colors. The smooth colors are nice, but look very slippery and may be hard to maintain. And there is only one textured surface - granite - not particularly attractive, but may have to do. BTW, Bullfrog is also offering rebates through Labor day $300 for R6L and $600 on A6L at the dealer I am purchasing from.
Thank you BullFrogSpasMN. One thing I am confused is whether the JetPaks themselves are different on R and A series. It seems that they can come black, color matched, ... and some have stainless steel trim? Does it matter?