YouFitness is not that old template. It is build on grid, so it has the same possibilities as most of our recent templates. Currently supported devices browsers are , iPhone, iPod, iPad, Android, Opera mini, Blackberry, Palm, Windows smartphone.
If you are buying the Youfitness demo, then you will have all the extensions installed with it. If you buy only the template you will have to purchase the extensions additionally and install them yourself. That is just how the site is built.
I won't talk badly of our competition. Both those clubs have very nice templates and very nice support. But, so does ours. Our templates are build to be valid, they are on yjsg simple grid, which many of other companies would like to use. It has endless customization possibilities and is built in a manner to help you - The customer - to use it as easy as you can. We have a lot of happy customers which enjoy very nice templates and instant support.
If you have any doubts about us i think just reading all logo is enough. "We care about your Joomla" meaning we don't just care so you will buy it. We care so you would enjoy the best quality product your money can buy.
Anyway i don't want to convince you to buy it. It is completely your choice. You said you like it. Ask around, see how our customers are doing, and if they are satisfied. And decide for yourself.