Well, the people that tend to gain well off of Fina are making it into an injectable. Now, people seem to be gaining well off of 1-Test, but they're taking it either orally or through topical dermal system. I know some people over @ Animalkits.be were experimenting with making an injectable version of 1-Test but I don't know what the results were.
I think that making Finaplix would probably yield forth better results in a shorter amount of time, not to mention, the price would be a lot lower. But, if you don't want to deal with getting a kit and doing EOD injections, then doing Fina may not be for you. Go over and check out Animal's site and start reading through all the posts. There's a lot of good info there.