I wouldn't put anything except SS on, personally. But I live in the rust belt. Inlinetube....full set, $180 in SS which is only $20 more than 'oem steel', why bother with anything else. Where I live, steel lines are gone within 5-7 years, I've used countless line sets of theirs, 98 S10, 86 C10, 73 K5, 2000 LeSabre, 2004 LeSabre, 2006 Suburban, 2008 Impala....an some more I'm probably forgetting. Never once had any issue with their stuff. I live close enough to their shop where I just go pick them up so no shipping bend for me. They always fit pretty darn close with little if any modification necessary. They'll also scan anything you bring them and copy them in any material you want. I even told them for my k5, use the k5 set, except i wanted the 1ton axle rear brake lines, cut a wee bit short each side because I have disc brake conversion and use their SS braided lines to connect to calipers instead of direct connected wheel cylinder, they comply, no issues at all. Top notch outfit with high quality product if you ask me.
I also ran fuel pressure and return lines in my custom fuel system on my k5, using their flare tool, yeah, it's a kinda a fight to get that SS to flare properly, but, it's doable, especially after practicing a few times on some junk pieces.