Wow...that certainly got a reaction......your Inon shares plummeted did theyThe most commonly flooded item among my group are Ike 50 battery compartments. Would not own one if it was offered for free. The DS125 is another matter. I expect strobes to be virtually failproof. Use that as your standard.
At the end of the day you need to think about what you will use the strobe for. Comparing the DS125 and the DS50/YS90 is like comparing a Nissan to a Mercedes. Both do the same job but the more expensive one will do it quicker, smoother and offer some opportunities that the cheaper one will not!
For serious wide angle only the DS125 will do (or multiple smaller strobes) and if the strobe fits your budget it will make a great macro strobe as well. The 100deg angle is a great advantage. If macro and portraits feature highly then the DS50/YS90 will work just fine. My preference would be for the DS50. This strobe will work happily in TTL mode with compatible camera or in manual mode via Ikelites EV controller.
Nobody so far has mentioned quality of construction as a deciding factor for strobes. For me Ikelite make strobes which frankly don't look like much, but they are well over engineered. Pay particulr attention to the battery compartments and covers. Ikelites are simple, robust and very difficult to mess up. The DS50 is almost impossible to flood! (I know somebody out there will prove me wrong!)Same can't be said for some of the Japanese strobes. I do not like the Sea & Sea's quarter turn locking ring, seems like a system which will eventually go wrong. I use them myself without trouble so far but one day....... Other strobes I have seen from Inon & Epoque could best be described as very flimsly when compared to Ikelite. In the days before digital Nikon made some great quality strobes as well. Units which were truly designed to take quite a few knocks & scrapes underwater and in the dive boat.........just a thought!
Describing an Inon strobe as flimsy compared to an Ikelite should be a clear indicator to everyone of the credibility of this entire post. I urge everyone to take a careful look at an Inon strobe then judge.
Inon strobes are of superior design and construction. That will be clear to anyone who looks at one.
In reply. Look at the battery cover of the DS50. It's a flat cover with the 'O' ring built in. No need for greese as it is only in compression. Make sure there are no hairs/particles, tighten up the large knob your done. A child could do it!
The DS50 body, as you will be aware, has been around in different guises for more than 10 years (probably way way more, Ike can you help here!). I have one that must be easily that old. It's been on hundreds of dives. I can't imagine how you could flood it. Of course if certain divers were removing the non removeable 'O' ring then maybe......??
Sorry if I hurt your Inon sensitivities. I was only expressing my opinion. If you ever have the chance, place an Ikelite DS50 a DS125 a Nikonos SB105 a YS90 and any other Japanaese strobe on a table in front of you. Evaluate the quality of construction, the thickness of the pastic mouldings used, the design of the battery compartments, the mounting for the strobe arm. Look passed the glossy colours, the nice transfers, flashing lights and knobs! I did and my conclusion was as stated.
Please allow others to have an opinion on this forum. I have no motive other than to answer a question posted on this board regarding DS50/DS125/YS90.........Inon was not even mentioned!