I've used an AirFlo-Multi Tip for several years now and find a lot to like about it. I'm not carrying extra spools, to go from floating line, to sink tip line, or many extra spools to go through the various sink rates of tips, that the line comes with.
Obviously, too,for the original $90.00, I ended up with "more or less 5 fly lines", instead of 5 lines, for say "$60.00 each".
I haven't used anyone else's brand, so can't judge those. But the loop to loop on the AirFlo hasn't been a problem with my rod guides at all.
Before, if I wished to change from "floating to sink-tip" while belly boating I had to reel everything in, change reel spools, re-rig the whole rod and start all over. Not always, easy, in a belly boat with limited room. Also the same scenario while fishing from my 'Tooner.
I also can keep the various tips pre-rigged with leader and tippets, all fitted into the nylon "wallet" that comes with the AirFlo lines.
I was moved over to the Multi-Tip, after trying to do this "re-rig" in my belly boat and dropped an extra spool to my Sage #304 into the lake I was fishing. (Reel spools, even full of floating line, don't float well!).
Some people like them, some don't. Some complain about "the hinging effects" of a multi-tip line. That may be true, but it hasn't been enough of a problem, for me, to offset the advantages these type lines are designed for.
Saint Paul-"The Highly Confused"
You cannot do a kindness too soon, for you never know how soon it will be too late.
-- Ralph Waldo Emerson