Properly speaking, there's only one kind of testosterone. The different testosterone esters (such as testosterone enanthate, testosterone propionate, etc.) are basically chemical time-release packaging. The testosterone itself doesn't do much until the body breaks down the ester into free testosterone.
Yes, those are fairly high doses for most people. (In particular, a full gram of testosterone could cause trouble for some people in terms of estrogenic side effects.) I've heard of pros routinely using 3-5 GRAMS(!) of testosterone a week, but that's only in combination with an anti-estrogen, and there's no rational reason for people who's livelihood doesn't depend on getting every last pound of possible muscle to use such high doses.
Have you tried trenbolone? Very similar to deca in terms of it's metabolism (non-DHT forming, non-aromatising) but considerably more potent. Just 175 mg a week can make a clear difference in my experience, although the side effects can be a bit harsh.