I dive with a seadoo VS, it has metal gears from my understanding, it's a 2 speed, I use it on every dive, including ice dives at times. It's light, cheap, easy to fix and does what it's supposed to do, is it super fast ??? no, but I am not in a hurry, I like to look around and see the scenery ! Who cares if you can go 10 mph when you miss all the sights ???
I LOVE THE FACT IT LETS ME HAVE MORE BOTTOM TIME SINCE I USE A L O T LESS AIR !!!!!!
I have about 100+ dives on the seadoo since I got it, no probs cept when I broke a switch when it was in the truck, a tank got tossed onto it.. doh... cheap fit, 30.00 in parts for a whole handle w/triggers... it was down a week, whoopdedoo...
The clone of the seadoo made by dakar is the same unit. cheaper, ebay price under 200. Mine came w/spare battery, still unused BTW.
So for a few bucks, I get more bottom time, use less air, and enjoy the dive.
Is it an apollo ??? does it compare ??? NO.... but I dont NEED one of those. I think sometimes people try to justify spending obscene amounts of money on something by talking it up. Are they good units, certainly, do they have a purpose in diving YES !!! are they for everyone ??? NO.
I'm happy with what I got.
J