Does your lfs have the same species of kuhlis all the time? Loaches can be a bit seasonal in availability. The "usual" types are "black", "striped" (often p. kuhli) & Meyer's giant striped. It's not that they don't all get along ok but to see the really fun interactions of a group 6 or more of the same kind is what you want. I would strongly suggest getting 8 (or at least 6) all at once since they're more apt to be the same species, but that's not guaranteed either.
I had striped & black together at 1 time & the older striped (either semicincta or kuhli) all hung out in groups of 3 or 4 & the p. oblongas kept separate, mostly all together. I prefer the striped both for looks & "personality" but never kept Meyer's.
The black oblongas were always hyperactive & not at all people interactive but I only had them a year or 2. The striped were more mellow; in fact I could reach into their tank & the 2 that liked to hang in the plants near the surface wouldn't even move much. That scared me the first few times, lol. Stripes also waited for me & food by the door to their room & only "loachy danced" after water changes.
OK, I am a loach nut as you can tell, lol! Everyone here on AC knows that. If you need an excuse to get more, I'm here for you!!
& as another loach nutty idea...have you looked at sidthimunkis (dwarf chain loaches)? They would be my choice over a ram any day & I like cichlids too, just not a much. They have a completely different look & behavior than kuhlis...expensive but oh so cute....ok, I want more loaches now too!!
Yes, luckily my lfs does usually have a very large number of many types of kuhlis and loaches in general. I'm more drawn to the orange stripey ones myself. I ask that not because of their availability, but because price wise it's easier to break it up a bit over a few days rather than all at once. And also if something goes wrong, at least i only lost a few you know? (losing any number would still be heartbreaking though) But if they will do better all at once, i think i can manage that. I'll just add extra care when acclimating them and keep watch to make sure everything turns out ok.
I also totally understand the loach love, they are easily my favorites! They're all just long wiggly friends!
I almost feel bad though, with all the loaches they're gonna take over my gourami's hidey spots! He loves to hide in the caves i made most of all it seems, he's kind of claimed them as his by now, haha.