Most people are storing in kegs and beer glass carboys from what I can tell and the bull dogs are good for pushing.
The diaphragm punks are good for pulling. And depending on the wetted parts, they may work for cold temps but mag drive pumps are the best for cold
Explosion proof ones start around 1600$ and got up to the moon quickly.
Diaphragm pumps are very good at moving volume, so once you get past a small volume of say 60-100 gallons you’ll wanna step up to a diaphragm and pull vs using displaced air which may cost you a full tank of nitrogen.
There are tank calcs though for how many cubic feet the nitrogen tank will be to base your displacement volume.
Don’t dead head a diaphragm or it will blow the fitting off your receiving tank and crush the transfer tank. Oxidation for me, is less a concern in alcohol but to each their own.
If you are gonna worry about all that, then you’d wanna go a little further and blanket all your tanks first. Use a lighter to see if the tank is oxygen free. Unused and empty of course before your literal jerkies start talking shit bc your common sense brethren may cut themselves while running high with scissors blade exposed.
The lighter won’t light without oxygen so you know it’s displaced.
Often you can’t vacuum things like kegs and alcohol transfer items. It’s not like butane and pressure vessels… the cost is much lower for a reason.