Its not the size that makes an impressive set-up. I would never suggest that you are trying to impress anyone, but if you are, a clean, well thought out and impecably maintained smallish tank goes way farther than a 500g tank with a couple hang-ons and a once a year water change regimen (whether it needs it or not right?)
It has been stated before but bigger is almost always better, dare I say easier? But if all you can afford ( and I dont mean just the initial purchase of the tank) is a smallish tank, just maintain it the best you can and bigger will come. Reality is, bigger is more to stock, heat, circulate, filter and medicate, not to mention maintain. What about a 200g leak in your apartment? I'd rather clean up 75g.
Usually, we get bigger out of necessity. Often we want to impress. Whatever it is, responsible fish keeping is core to the hobby no matter what size the tank.
