Here's my
opinion for
recreational diving:
Aqualung Titan LX: This is probably the best bang for your buck within the Aqualung/Apeks brands. The price is right, it breathes very well, is light, and has a small profile. From what I have read, the Legend LX only breathes
slightly better within recreational limits, but costs a whole bunch more.
Here's my
opinion for
technical diving:
Apeks: I just got a pair of the XTX100's a couple of weeks ago, for my first-time doubles rig. I looked exclusively at the Apeks line, as I'm very happy with my singles rig ATX50. I have about 15 dives on the XTX100, with 10 of them at or deeper than 100 feet in FL springs and offshore on the Mighty 'O'.
First Stage: I wanted to have the same first stage for both posts on my doubles. I like the better breathing from the FST (1st stage packaged with the 100 series) over the DS4 or DST (1st stage packaged with the 50 series). Personally, I didn't think the FSR (1st stage packaged with the 200 series) was worth the increased pricetag. YMMV
laivindil:
...The XTX adds notched breathing control rather then smooth, the ability to mount a hose on the left side of the reg and swappable exhaust ports (which no one I know of has had a reason to do). The XTX is also a little sexier looking...
Second Stage: The ability of the XTX series to change hose sides is not important to me, as I dive a traditional Hogarthian doubles rig (long hose primary, bungied backup). I like the reg size of the ATX series (smaller, lighter), but favor the exhaust port size of the TX series (larger, better bubble dispertion) for my primary 2nd stage. So I
really like the swapable exhaust ports for the XTX series, which allows me both large and small exhaust ports, keeping the same 1st and 2nd stages for each post. I set up my primary reg to use the larger exhaust port to better direct bubbles away from my mask, and backup reg to use the smaller exhaust port, so I don't have such a large piece of equipment hanging from my bungie.
Conclusion: I spent several months weighing all of these factors, and even waited 2 months for the XTX series to become commercially available. Now that I've dove the XTX100/FST regs, I love them, and their exhaust port flexibility. It was worth the wait to get the
exact regs I wanted, considering that I'll be diving these regs for a very, very long time in my furure. Even though my diving style may be different than others', but these are all factors to consider when buying regulators.
Let me know if I can pontificate any more :shakehead
Mike
BTW - since both XTX100's came with free Apeks Egresses (which I don't use), I have them for sale, if anyone's interested