Newbie to SCUBA. Looking to purchase my own gear.
Looking at all the regulators on the market, there is a very wide price differential between them.
What do you get when you spend the extra money?
My wife doesn't really like the rental regulator we are using for our classes. She says it's hard work to breathe in and out of. Will an expensive regulator provide for easier breathing?
There are a couple factors that influence the price of regulators. The main one being the features you get, but also your geographical location (some countries have very high import tax) and brand name. Basically the same things that makes any consumer product more expensive.
The main thing you will get when spending more money is additional luxury features just like if you bought a Toyota vs. a Lexus. Ill use Apeks for example:
I literally just ordered an Apeks US4 1st stage last week for approximately 120-140 USD depending on where you order from. Now this is about as basic as 1st stages get and would be what I would call the "Toyota" now on the other end you can the "Lexus" which would be the Apeks DST for about $260-$300 double the price. Well to answer your question what your paying for to more than double the price is, environmental sealing and a swivel turret. The US4 has the exact same internals as the DST but it lacks all the fancy features. But depending on your application you may want/need these feature. So you have to determine your diving needs then base your regulators on that.
I also mentioned location. So location matters because some of the most popular regs out there like Scuba Pro and Apeks have a significant price difference in the EU vs. the USA and even worse in Australia or Asia where there is extremely high import tax on diving gear. Me personally I have owned both these brand and I always buy them from the EU as they are significantly cheaper. And vice versa, Hollis products in the the EU are crazy expansive compared to what they cost in the US.
Lastly brand, just like anything you tend to pay for the big brand names. Ill use Apeks for example again. As I mentioned be for the Apeks DST is like a Lexus so of course your going to pay more for that but many companies out there "copy" it and sell it for a lower cost because its such a popular regulator. Think Coke vs the generic Costco Kirkland brand "cola". There is nothing wrong with this an actually is a great way to get a very high performance reg with all the fancy features for a lower cost. Just off the top of my head here is a list of companies that make an Apeks DST's variants for a lower cost; Deep6, TDS, DGX, Dive Rite, Tecline, HOG, Hollis, Scubaforce, IST, etc.
For your second questions, no expensive regulators will not always breather better if tuned correctly. For example you could buy a Tecline R2 with Tec2 second stage and breathe it next to a Apeks DST with XTX200 and they would breather almost the exact same. Only difference is the Tecline setup would be half the cost maybe more.