Well, I'm running six tanks atm and the only ones I'm 100% happy with are my son's Edge and the 4' in my bedroom!
Out of the two in the living room which I guess count as 'display' tanks; I'm almost 100% happy with one, but I've decided I need to take the panda cories out (the tiger barbs are just too boisterous for them, I think) and replace them with the zebra loach from the kitchen.
The other one needs re-scaping and another six Congo tetra, as I have only six in there and it's not enough, and there is
no Loricariid in there
, so that needs remedying ASAP!
So, I voted 'more than 80%'