I have gotten many plants from Ecuagenera and I am pleased with all of them. They have their own site,
www.ecuagenera.com. They are out of Ecuador, so sonetimes you have to wait a while to get your plants. You can pick plants up from a USA show if they are attending or they will ship them to you when they are in the US. I have done both options without a hitch.
They also have very good prices- I imagine because they have little overhead compared to US nurseries.