That's fair! The reason I suggest melafix is because it's a tea tree oil based product not an actual medication based one so it's sometimes easy to add on to an anti-parasitic without too much stress as long as you follow the dosage correctly. It does make the tank really foamy though @_@;
Metroplex is a pretty good one from what I've heard. Just never got to use it myself.

And I totally get you on the clean up crew. I used to run the 1600 gallon tank at a big box pet store....
I had to explain to so many people how it doesn't matter that your pleco is a 'veggie' fish.... they WILL attack your tasty goldfish or angelfish's slime coat if they're hungry. Or the whole pacu being veggie versions of piranah. They'll eat anything they can fit in their mouth. Once I had someone explain how the person at a different big box store shorted them fish and showed me the receipt and the bag of fish. I had to point out that the angelfish had a nice snack because the tetra was hanging out of its mouth. =/

It's tough to say for the neons really...Neons are such finicky fish. It really is frustrating to diagnose anything but ick in them. They either live forever in your tank or just stress out and belly up after a few hours. I started swearing by white cloud mountain minnows as a good starter schooling community fish but they don't have the flash that a neon does.