The stuff I'm mainly asking about is BCDs and Regulators at this point. For BCD I've really only used the jacket style and I like how they feel and fit. I don't think I'd go with the BP&W right now since I'd be traveling with it and that would just add weight and bulk, and plus, I like the jacket style. But I see some that are like $300 and some that are like $800 and I don't really know why there is such a drastic price difference.
I will check out some of those videos by that guy you all recommended on youtube to get an idea. I'm still not sure how I would go about testing out regulators if I were to check some out at a local shop. Using them out of water is just different than when under water.
Budget isn't that much of an issue right now either but I also don't want to spend more money on stuff if it doesn't make much of a difference either. Obviously I'd rather spend less than more though lol. I did buy my dive computer used though since it was just a tad more than the brand new Zoop but had accessories I wanted as well as more features, in case I wanted to use them in the long run. So I'm also open to used gear, although with used regulators, you really don't know how they were treated.
As for the annual maintenance on regs, what is the ball park price you are looking to spend on them? And do you typically have to send them somewhere? Or will the LDS (if I got it locally) handle that part of it for me?
I understand where you're coming from.
The gear itch is hard to resist, and I was the same way. There have been lots of valuable comments made so far.
On the bcd side, I travel with my BP/W and like how small it stows, though it is heavier than my travel jacket. At this stage in your career, unless you want to jump into the (ever-popular on SB) BP/W arena, give a little thought to the Scubapro Go. For the type of diving you describe, it may be perfect, for a jacket style. Lightweight and stows small.
For regs, there are a gazillion options, and again, the advice you've gotten so far is great. You shouldn't hesitate to buy your own gear now, because as your preferences possibly change, there is a HUGE eBay market out there to unload your (well-maintained) gear, and subsidize your next upgrade. That differential is probably no worse than the cost of renting different gear each time, with variable results. I've seen some really crappy rental gear on dive trips.
As for choosing a reg, my biggest recommendation is to buy what you can have serviced locally, IF you trust your local dive shop. Have a conversation with them, and try to get a feel for their service capabilities. There are a lot of mediocre technicians out there.
If you can't find local service that you trust, there are several well-regarded places to mail your gear, at a modest extra cost for postage. But you'll have service you can trust.
Once you determine where you'll service, buy a brand in your price range that they handle. It'll pay off. If you end up changing your mind down the road, pay the price delta between what you got for your gear on eBay and what your new stuff costs, and stay happy. There is
nothing like diving your own regs, unless what you rent is better than (and as well-maintained as) what you could afford.
Thirty years into this hobby, I almost only dive bargain, used, high-quality gems that I then service myself. But I still have (and dive) my old Mk10/D400 that I bought new right about where you are in your training. Do I like my new titanium stuff better than my old? It's often hard to say...