Thanks T-bone, the reason I changed to Dry system is because I had a free-flow, I was in 6*C water temperature, here in Europe or at least here in Nederland it is prohibited wet-system, due to free-flows and for that minimize this,( that is what I was told ) it is kind of conflicting all this information, as well, if we look at the Legend and Glacia they are sealed as well, the Titan here comes sealed here, I bought my regulators in the US, and started to dive in Curacao now I'm living here in Nederland, and after the Free-flow event I converted my Titans ( and I was warned that it was likely that I will had one with the wet-system )
I understand that with the wet-system now water is in contact closer to the internal parts of the regulator allowing more temperature exchange, I don't know what was the conclusion after the investigation they determined that here the wet-systems were causing free-flows and were prohibited ( at least that was that I was told ), this is not something that was taken lightly as it is a EU regulation.
I understand the temperature exchange, I work with heat exchangers as well at work, but I guess to make a EU regulation ( if so ) it had to go thru research, I will dig more about this, that is for sure, my dry-systems will stay one, as I'm not planning more than 60m, at the moment I only Helitrox certified, but hope to go for the Trimix training if I have the possibility.
Thanks for your inputs, if somebody know about how thru this EU regulation on wet-systems is, and what was the conclusion and research and tests, please keep informing.