Dominick Gheesling
Contributor
Back plate and wing. You will not regret it. Totally modular. You can build your kit piece by piece to fit your needs. It can grow/change into what you might need for different types of diving.
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As for "Make your 2nd purchase FIRST.", its a good catch phrase, however since a good portion of divers drop out of diving, it just puts possibly better gear on the used market. If you stay in diving, you will find uses for your older gear when you upgrade, if you don't wear it out. At this point you just need decent gear until you find that the type of diving you do requires more, it may never require more. Spend the saved money on diving and work from there.
Bob
Better gear is not necessarily more expensive than lesser gear
Many BCs are more expensive than BP&W.
Better performing regulators are often no more expensive (and sometimes less) than cheaper ones. Especially, if you are able to purchase demos and closeouts.
Also I don't know what use someone would have for their old gear.
When I replaced the regulators my old ones sat in the bottom of the dive bag as a backup until I sold them and bought backups that matched my primaries.
If you read the threads here about regulators the ScubaPro MK25 keeps coming up. So do Atomics and Apeks.
Between me and @Bob DBF you have two votes for the Sherwood Magnum. Recent threads will reveal more votes in it's favor.
I recently bought a Magnum first stage on eBay for about $30. It looks and operates like new. I also bought a Magnum second stage. It looks like it had barely been used, if at all. It was also about $30. Both these prices included shipping. I like the Sherwood Magnums because it is "positive pressure" sealed in the first stage. It has a small one-way valve that emits a steady stream of bubbles while diving. Supposedly you will lose about one or two breaths during an entire dive. My 30-year-old first stages look brand new insides. The second stage easily unscrews by hand so you can very easily check for debris and condition between dives plus you can allow it to dry more thoroughly to help prevent corrosion. My girlfriend is using the regs from eBay and it took me 62 years to find her so I don't want anything to happen to her.
Having someone buy their second set of gear when they lack the knowledge to buy their first set of gear seems strange to me.
I think Scuba gear is fundamental; without it we can't jump or dive.