From what I can see, the W-R 1F95-371 will handle a 2 stage pump and 2 stages of backup. I could be wrong. I have one at the shop, I can play with it Tuesday. I know the 8320 won't stage the backup. You can use the board's timer for that if you want. No arguments that the VP is so much easier to use and the screen is great. But boy, the W-R can do so much. If you want the humidity control, can hook the dehum terminal of the stat to the Amana's board. I seem to remember Robin talking about a W-R stat Amana has out might be worth looking into also.