You can probably pick up a clean used MityVac on ebay for cheap, plus the MityVac is rebuildable if the need should arise. I've had my MityVac since the 1980's and it still works great.
I have one that's an Actron I think. Bought it 15 years ago; used for tuning carb. cars.
I also have a more vintage one. Neighbour gave it to me; it's a built-in carb-line pressure gauge too.
Still DD a carb car. But get far more use out of my mity-vac.
I looked at the HF vacuum gauge in the store. For roughly the same money, I ended up getting a really nice large dial Ashcroft vacuum gauge new old stock on eBay. It's not a compound gauge that also measures fuel pump pressure, but most of those are pretty worthless for anything fuel injected anyway. I just added some rubber tubing and some adapters for auto work. I also use it for other things like testing the fuel oil pump and supply line on our oil burner, so it's pretty useful.
I don't think it makes a big difference since it won't be used all the time. I most often use an ancient Sun dual vacuum gauge in a metal case, and a couple of vacuum pumps that have gauges. Also I made an automatic vacuum pump for veneer pressing, and on that I have two regular gauges that look like compressed air gauges. (Why two? So I can see the reading from different directions.)