Thank you so much for the information... it is very helpful! I think what am going to do is rent a full digital camera/strobe package on my next trip to Bonaire in August to see if I like the more compact digital systems. If I do then I may not go to an Ikelite system with DSLR at all. If I don't go that route then I will consider your offer to buy the Substrobe 400, it is in excellent condition and works very well. Although, I have no clue what the value of a strobe like that is now? Thanks again... Mark