Thanks for your input folks! I bought my JD-100 about a week ago and have been breaking it in gently since. So far I'm impressed with it's value (sure there are better, but for the money, it's hard to beat). I'm going to let it get a few hundred hours on it and then start playing with tubes.
There are some wonderful tube-rolling guides already on the forums for the Jolida.
There are some wonderful tube-rolling guides already on the forums for the Jolida.