I use Sea and Sea YS-90DX strobes now and I absolutely love them (they are discontinued and replaced with another number now). I will use them until they or I wear out, whichever comes first. I suspect the latter. I have had much experience with both Ikelite (150, 225, 50, MV) and Nikon (SB101, 102, 104, 105) strobes. I think the Ikelite strobes are excellent and agree about their service. IMHO the Ikelite weak link is their cords. Have had many failures with the cords/connectors and I always carry several spares.