I don't have the Arctic, but I do have two 7mm BARE wetsuits; the Alpine full hooded and a 10 year old two piece farmer john and step in. Both are very good suits. The obvious difference is the thickness (single layer vs. double) and the full isn't quite up to temps below 50f for me, so I'd add a layer if possible (I gotta lose the gut first though!)
They are both very comfortable and easy to don/doff, and the fit is great (the 10 yr old one used to be when I was xl, now I'm xxxl. Seems like there should be an exclamation mark when you have that many x's in your size.) One of my needs is the ability to put on and off myself, and the Bare is easy. Very good quality materials and workmanship.
Couple of other things;
With the attached hood, I never get the cold shot of water down the back, it's down the front! (the Alpine is front zip.)
It seems like the newer material in the full suit is more stretchy than the older two piece, and I notice the suit holds water like a bag when I exit post-dive. Not a lot, just enough so you notice you have something like a bag of water that is draining down your legs. Guess this makes it easier to put on and fit your form, but seems like the stretchier neoprene would be more compressable at depth. I know with the 7mil, I'm pretty uncomfortable at the surface in ~46f, and it gets a little too cold at around 90 fsw.