If I could only have one, I'd have a bandsaw. Specifically, a Marvel tilt frame saw. They truly are one of the best saws ever designed.
I own 4 different saws, and they all have their place.
The Marvel is king for versatility. It can basically do it all, but specializes in odd setups. It's slower than a cold saw, takes up more floor space, and are kinda expensive. But it makes up for it with the large capacity, versatile head tilting, unique vise setup and power feeds.
If all I ever cut was tubing and small bar, cold saw all the way. They're fantastic for repetitive, accurate cuts. Especially for miters. I worked in an off road fab shop that basically only cut tube, and the only saw we had was a Bewo (Scotchman) cold saw. Mine is a Startrite 350 from the 80s and it works great. Having full flood coolant and low RPM is great for cutting stainless tube or parts that are heat sensitive like plastics. I also love the dual angle swivel head, allowing the bar to stay on the stands and I can set up any miter I want. I used the heck out of mine when I made a lot of custom handrails and cut a whole pile of small tubes.
If I needed to cut larger shapes with no miters, horizontal bandsaws are excellent. I have mine set up to cut production on 4" - 12" diameter rounds for the lathe. Bigger blade, full flood coolant, heavy duty rigid vise, these saws excel in making accurate, straight cuts in solid bars and beams. You can get them with mitering heads, but at the cost of rigidity and squareness.
The vertical contour saw is amazing for one off fab work. Making custom jigs, tools, fixtures and parts, the vertical bandsaw is hard to beat for cutting any weird shape that could have a curve.
Hard pass on those silly "dry cut" saws. They're LOUD, messy and in my opinion dangerous as hell. Get a bandsaw if you are considering one of these. I've seen these catch the part, jam it in to the vise, and explode a blade, fling parts across the shop, and one co-worker almost lost a hand when it jammed so hard on a piece of tube that slipped in the vise it tried to **** in his hand. The blades are expensive, fragile and can only be sharpened a few times before they're scrap. A true cold saw blade can be sharpened all the way down to the hub.