Not the person you're asking, but I've got a little time on one. If you aren't pushing it and don't need a zigzag stitch and/or walking foot, you'll likely find you'll be as happy with an old cast-iron Singer. If you don't already have one, pick up a 15 -90 or 15-91 or one of the numerous clones (which in my limited experience with them are also decent).

I ran an old Singer 127 through a pile of fabric a Sailrite was struggling with. The old domestic Singers aren't industrial, but if you can't do it once, slowly on a 15, it's even odds whether it can be done at all[0].

The 15 (or 66) is a much, much more refined machine. Parts (bobbins, notably) are readily available, and if you find you do need more, you can sell it for what you paid for it. The Sailrite, IME is a clunky, value engineered version of what you really need when you hit a problem an old Singer can't solve. Once you get to that point, you'll know what you need and how a machine should run.

If you've already hit this point, I'd suggest looking for an old industrial machine on your local Craigslist or Facebook marketplace equivalent. The Sailrite is likely to piss you off with how crudely it runs and handles. I'm told by my upholsterer colleague that an import servo motor is a huge upgrade from a clutch motor. Especially if you're coming from a domestic machine with a variable speed control. On the rare occasion that I've used a machine with a clutch motor, it's a grab hold and hang on for the ride kind of experience.

[0] I'm explicitly not including things that require a serger, blind-hemmer, cylinder bed or other specialized garment/leather machines. The Sailrite won't do those either.