Fit is the most important part, so I'd avoid any suit that is not made-to-measure. Some suit makers offer custom sizes that are not true made-to-measure. They'll figure out the suit size that fits you the closest and then alter it, e.g., shorten legs. It will be a custom-ish suit, but not fully custom.
If you're serious about tech and cave, eat ramen for a few months and get SF Tech. I am an unapologetic SF Tech fan. All suits are custom - perfect fit. Build quality is light years away from a typical suit sold at your local dive shop. It is priced around Santi and Bare but is better all around.
If you can't afford SF Tech, go with Sea Skin. Made-to-measure fit. Good customization options. Affordable price.
Seaskin and SF Tech are at the opposite ends of the price spectrum and from the business viewpoint that's where usually you'll find value. Manufacturers in the middle of the price spectrum love markups and add just enough gimmickry to lure you into paying the premiums.
Edit: TL;DR If you're seriously talking about "buy once, cry once" then go with SF Tech. Free annual service. Quality stuff.