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How does the SMS50 compare to the Nomad LT? They appear to be trying to compete directly with each other, and with the sale Hollis dips below DiveRite in pricing. Is there a strong reason why some people might prefer one to the other?

I suggest that the courtesy comes in being respectful and polite to each other, and focusing disagreement on the ideas rather than the people. It is the style of the Internet in the large and forums like this in the small that the important thing is to stay loosely on-topic. If the OP asks, "how...

It may be "nonresponsive," but why is that bad? If I ask car enthusiasts "I can't afford to upgrade the brakes on my dragster yet, but I bought a bigger engine, how do I use a parachute to slow myself down?" I must be prepared to read a few responses from people saying "Don't go faster until...

Do you strongly disagree with Gotta be good at OC before diving a rebreather, with you've gotta be good at deep OC before taking the RB deep, or both? And why?

I think if we are conflating rebreathers, trimix, and the trend to relax certification standards, we are not comparing apples to apples. Comparing apples to apples would be theorizing that PADI may start offering pSCR training at the Tech40 level, teaching divers to extend their bottom times...

Who in their right mind would offer a recreational trimix certification card? And what kind of certificate-collecting magpie would buy such a shiny thing?

A clarification: Besides not diving deeper than recreational limits, are you also not exceeding your "No Deco" times (however you may calculate them)? There is, obviously, a vast difference in how you approach the question of handling an equipment failure at 72' depth between having no deco...

Yes, local or global maxima can be stable, my observation is that UTD may not have changed enough to find a different local maximum. It's ok to try making changes to the stable configuration, but you're unlikely to win unless you're prepared to make big changes, like from backmounted manifolded...

We can theorize all day that it is safer to have a system where you have to pay attention all of the time, but the evidence is overwhelming that even with a system (driving a car) where a moment's inattention can kill, people can and do kill themselves and others regularly. In the United States...

Okily dokily, and all my best wishes for working things out!

Pardon my trolling, but I think it's ridiculous that people freak out at the dangers of diving CCRs, but then climb into a motor-car and drive it down highways while checking their email and rocking out to "Stairway to Heaven." With their kids in the back seat. We as a society have an amazing...

Would it not be simplest to get the dry suit immediately? The way you're planning it, you need to learn (and practice until you're blue with cold in the water) how to handle an emergency loss of wing lift with the lift bag. You need a lot of practice, because it isn't something you'd use under...

And yet, Dive Rite sells their "Nomad LT" with just 22# of lift! They say it's only for wetsuit diving with AL80s (or Faber 85s). I dive a 5mm suit, I worry that it would not be sufficient lift if I went below 30m or tried to carry a deco bottle when and if I start taking some extended range...

With respect, it does not and I suggest it cannot. I am a programmer and author of several books about programming. Technical writing is hard, in part because what is well-written for one audience becomes confusing or pedantic for another. I readily accept that the Apeks site is useful for some...

Thanks, exactly what I was looking for! And ignore the "you're only reposting what's already there" comments: Presentation and organization of material matters.

I was curious about Apeks, so I went to their web site. I suspect I don't know the correct question to ask, because it's isn't at all obvious what the differences are between the regs they offer. For example, they have a sidemount "set," but don't seem to say what regs are included in the set...

I'm not qualified to state whether the UTD system is itself a local maximum or not, I'm just trying to suggest that hogarthian + independent doubles + side mount is a local maximum (or close to it), and when you're sitting in that local maximum, UTD sidemount is going to look pessimum...

I'm late to this party, but here's my perspective on "Why all the UTD Haters." It is not based on twenty years of diving experience, in fact it is based on observing similar social dynamics around choices in other areas. It may be some kind of universal behaviour of people, or I may be way off...

xkcd: Duty Calls

After a few years off, I decided to get back into it with my third trip to CZM. I decided to keep things simple, so I resolved that there would be no lessons, no drills, no checklist of dives I wanted to do, just a week of tagging along with the attitude "I go where the group goes." There was...