I just got back from a trip to Tulamben and then Lembeh Strait. Tulamben is a PITA to get to . . . about 4+ hours by car from the airport, FYI. We stayed at the Liberty Dive Resort, which was reasonable dive hotel. I went to Tulamben for the nudibranchs. I found several that I had never seen before, generally no bigger than a grain of rice and often smaller! I got excited when I shot a "normal" size nudi, i.e., one that I could actually see. The slope near the Liberty wreck was particularly good. The main drawbacks of Tulamben (for me, anyway) are the 4+ hour trip to get there, and that all of the dives are shore dives -- sometimes very sketchy entrances. Maybe I am a little spoiled. This is no frills diving. If your camera gear malfunctions, no one really knew how to help. After about 5 days there, we left for Lembeh Strait for our third visit, for 12 days. For me, the unusual nudis were not as plentiful, but there were a decent number of less common species, but much more macro per dive for me. Plus, Lembeh Reort, where we stay, is luxury diving. We go out on a boat, there is a full camera center there, you can get virtually anything repaired if necessary and the food and lodging is simply outstanding. I am glad that I went to Tulamben. I won't be going back though. If the choice is between Tulamben and Lembeh, definitely go to Lembeh!