If you do not want currents then please do not go to Komodo. It is not a dive destination for the inexperienced or current avoiders. If you want to go to Indonesia, then Bali is a great place to start...you can take a day boat to Nusa Pendida (or go stay for a few days in Lembongan) where you could also see a Mola Mola if you are lucky. The mantas (lots of them) are always there and it is a relatively easy dive with some surge. There are lots of other dive opportunities around Bali and it is an amazing place to visit.
Palau is another option for Mantas... LOB or resort!
Palau is another option for Mantas... LOB or resort!