The Quickshot cases work fine in the Handy1–you just have to use a non-elastic strap and crank it down very tight. The main problem with using the case it that it doesn’t allow a lot of expansion at the ends so it doesn’t work for everyone.
To solve your length issue, pick up the Quick Connect and attach two QS end-to-end. Note that Fleshlight doesnt have very tight manufacturing tolerances so some QS cases may have trouble with the Connect.
Disclaimer: Sleeves are incredibly subjective–take any recommendations with a grain of salt because odds are dude is nothing like you.
I own 8 different QSs and I’ll say that while some are pretty bad, none are what I would call exceptional. My pet theory is that design of the openings dominate any internal texture so most end up feeling about the same. No issues with durability though–weird that you say they tore.
A cousin to the QS is the Fleshskins–which I love.
I went down the rabbit hole with Amazon sleeves and 100% were unacceptable because they didn’t use the same blend of material as onaholes/FL/Handy does – all were too stiff and rubbery TPE. I should note that I went with the straight sleeve varieties–none of the extra contraption.
I’ve also purchased nearly all of the Handy brand sleeves. However, the last few iterations have been subpar and badly designed so I’m holding my money back until they hire a competent designer again.
All said, I think I have like 30-40 sleeves, but only regularly use four of them.