I am going to add a black background, just to better accent the fish and plants.
As for fish, so far I have Guppys, Corys, Kuhlis, 1 Gourami, and 1 common Pleco.
In plans at the moment are 2 Female Sunset Fire Gouramis to go with my male, 1 Male Neon Blue Gourami and 2 Females.
The Gouramis will be in and out because I understand that they need a lower tank for breeding and I'm beginning to think my 30 Long would do good for this purpose.
I haven't decided on other fish because I'm still researching heavily. I do enjoy my guppys.

Not only are they colorful they are the most friendly fish in the tank.

I can't even reaquascape without being nibbled.
As for how a tank should be, as I had said earlier and both Sorrell and Lizard said, a tank is most important to the one who owns it because the tank we own is what we have to look at day in and day out.
Personally, the greatest compliment to me so far was when my father should up this morning, walked in the living room and said "That is one good looking tank". Getting compliments out of my father is not always easy........