I guess my top mistake was getting ahead of myself.
In the beginning, all I wanted was a simple set up with some nice B&B auratus. I read and read and read for about six or seven months, and then I joined Dendroboard. I still had my mind set on auratus, and I didn't pay much attention to the smaller and flashier species. Until, of course, I saw a thread someone had posted about their new varaderos, and I fell in love. Now I was planning for a pair of imis. About this time I finished my first viv. It was rushed, and looked horrible.
My probable pair of tarapotos came in july. They did well for the first few months, the male calling almost constantly, until I noticed they weren't eating.
Shortly thereafter they died.
I'm still not sure what caused their death, and there is no way to find out without a proper necropsy, but I'm sure that if I had more experience with larger and hardier frogs, I would have been able to identify the problem and possibly prevent them from dying.
I'm not saying that Imis and other thumbnails aren't good "beginner" frogs, just that they weren't good beginner frogs for me
Oh, and Imitators weren't the only frog I considered. At one point I wanted pums. And I posted a thread about it, both here and on another forum. As you can imagine, I received some.... eh.... "enthusiastic" responses. I'm still too embarrassed to post on that other forum. And I'm very glad I was talked out of it. After my experience with my imis, I wouldn't trust myself with any pums.
Right now, I'm planning a 30 gallon viv for those auratus I never got. And maybe a larger display tank in the far future. You should see a build thread from me soon! :]
Sorry for the illegible jumble of thoughts I call a post,