i guess... i hear they are similar to Milwaukees which in my opinion are complete crap. Just remember that if you spend a little more you will have more peace of mind.
as i said in your other thread thay aren't the best but at the same time thay aren't the worst and if you want to spend even $70 more you can get a better regulator and needle valve from a place like Greenleaf Aquariums, SUMO Regulators, or Rex Grig
Only $70 more? Thats almost the price of the JBJ regulator! For only 70 dollars more... and what do you get? I have a JBJ that has been running for over eight years. Works great. Other than possibly the needle valve, what can a 200 dollar regulator do that a 90 dollar regulator can not do? Absolutely nothing. All three of those are way over priced. You can buy the same regulator as what Rex, or orlando, or Sumo have and put your own needle valve on it for less than 50 dollars if that is the type of regulator you want. Just buy the regulator from where they buy it. Thats all they are doing, is just sticking a needle valve on an industrial regulator and then charging a heck of a lot of money!
JBJ and milwaukee work great. They bubble the gas into your aquarium and make your plants pearl and grow like crazy.
the needle/metering valve is what your actually paying for with that $70. have you looked at the price of some of the better metering/needle valves those are the expensive parts (admittedly i bought mine when prices where lower). yes thay do raise the price when thay build them how do expect them to make a profit.