Was gonna ask about that...thanks!
If you are doing a home remodel, put the cost of the tools completely out of your head. Not relevant. Pneumatic trim nailers for a serious diyer are completely obsolete. I used a pneumatic pin nailer when I was shop based. No more. Only time I use air is when I’m shooting big stuff for long periods. What nail gun to buy is the wrong thread to post. Without more info, not being snarky, the right answer is really “all of them”. I don’t have stationary woodworking tools, but I think I begrudgingly have everything else.
Priority of tools depends 100% on the specific work statement. To say 18ga should be first is ridiculous. There is no one right answer. I started with a stable that I jacked back to level and plumb. Most important tools were shovels and wheelbarrows. Earlier structural work was sawzalls and SDWS screws, not nails.
Suppose the OP has a late Victorian, assume ballon framed plaster and lath walls and needs kitchen, bath, HVAC and electrical. Realistically, best thing to do is gut it. But if he isn’t reframing new walls, or if new framing is minimal, Id skip the nailers and use screws. Screws are slow and expensive, but better than nails in many ways.
Not knowing the project, I’d gut the interior, trying to save whatever floors, doors, stairs, trim I could. Round me, all that is Chestnut in the period and irreplaceable.
Then I’d focus on leveling shoring up floors, load bearing walls, and if balloon framed, installing fire breaks. I put stuff like that in with pocket hole screws. Reason for mentioning fire blocking is, once in place, I’d drill that for electric and pex, then fire foam those joints. Once you start running systems, if you want to add fire blocking or the code enforcement officer insists on it, you are out of luck. You’d have to spray foam it all.
This is just an example, but that’s how I’d look at it. I think the OP would be better off sharing his plans and letting us respond with suggestions.
And yes...they are expensive!
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