My assumption is that there is only one version of the unit, and that you can add cables any time. So you can try wireless and add the data cabling later if needed.
I have the Quantum (1), and at that point in time you could choose. Wireless-only was a bit cheaper; or you could get the one with both wireless and wired capability. I went with the latter so I'd have my options.
That said, I thought the Quantum 2 (current model) only came in one "flavor" that included both options, as you said above. But maybe OP is looking at a Quantum (1) on sale or something.
*****
On the cables: If you are going wireless, then obviously it's just a power cord. But if you are going wired, there are a couple of options, and one may or may not be better just depending on your constraints (at least this is as of when I put in my Quantum (1) a little under two years ago.
There are separate cables available for power and data. This was so that if you already had power going there from an older unit, you didn't have to run that again. Then there is a "combined" cable for both. This is sort of positioned as the "best" or most obvious cable to get if you need both power and data. But there is (or at least was) a wrinkle. That is that the Quantum (1) (I think the 2 is physically the same though), has two ports on the underside. Then there is a squiggly "maze" where you run the cable out if exiting aft.
So if you get the combined "better" cable, you have to buy their Y cable in order to connect the combined single cable to the two ports on the underside. My setup has the cable(s) exiting aft (depends on your radar mount though of course). The Y cable didn't really fit this scenario very well (as in, not at all). After the Y cable went through their "prong maze," large connectors ended up right where I didn't want them.
Doing some research, it was actually better for me to run the two separate cables (one for power, one for data). They fit through the "maze" on the underside of the radome better, and exited aft more cleanly. There could be other advantages (or disadvantages) of the thicker cable vs. two thinner ones depending on your exact setup.
If the cables decision ends up being a thing for you, feel free to PM me and I could dig up the various cable names and numbers. It was all a bit confusing until I sorted it out with their tech support. Not difficult in practice, just the cable names and etc. can be a bit "not straightforward."
Note: I don't think the physical radome or connectors are any different on the "corded" Quantum (1) vs. the Quantum 2, but of course double check since I have the original Quantum.
Frosty
