Thanks for the realistic advice. I rather figured as much so I'm not surprised. Evidently this will require much more research than I'd originally anticipated but that's OK. I'm in no particular hurry, not even 'kickin' tires'. Just gathering information.
I don't think we really understand "the why" behind your interest. Obviously the advice provided is informed by our assumptions of what you are looking for. Would you be willing to expound a bit on why you are interested in airguns and what you want to use them for?
Entry into air gunning has a lot of similarities to getting into centerfire. If your interest is in hunting, folks will recommend very different equipment than if you're interested in short range benchrest or F-class. I might suggest you consider entering airgunning the same way. If you have lots of disposable income and want the best, your first centerfire rifle might be a custom build for $10K. If you are trying out F-class, there are lots of threads here suggesting trying a competition with something you already have, or building a relatively modest Savage (for example). If you are unsure about airgunning, don't want to spend thousands, and want to try it out (whether "it" is backyard plinking, benchrest, pesting, silhouette, whatever), starting with a decent "do it all" rifle is likely a better approach. It may not grab you, and being out $1K will be easier to take than having spent long dollars on something that is great, but that you don't use.
If you are in the cost-no-object-buy-once-cry-once position, then consider FX or Daystate or RAW, a SCBA bottle and large electric compressor. If you're in the want-to-try-a-match-with-my-factory-Savage position, then I'd recommend a Benjamin Marauder. For charging the lower end PCPs, hand pumps are adequate, BUT, a Hill high pressure hand pump will set you back a couple of hundred dollars. For 500, you can pick up a small Air Venturi electric pump that will fill to 4500PSI (and there are Chinese pumps available for a bit over half of that cost). Just like the factory Savage, you won't worry about breaking it, and you may end up using it a bunch even if you subsequently move up to better equipment.
Maybe personal experience will help. I've had springers and air ram rifles for decades. I bought a synthetic stocked Marauder as my first PCP and a Hill pump to fill it. I loved it and went on to obtain several FX rifles, a RAW, the Daystate Red Wolf, AirForce, etc. I have rifles and pistols in .22, .25, .30, 357, and 457 calibers. I shoot pellets and slugs, and spent the majority of my airgun time plinking, pesting, and target shooting on my property. With all that, the rifle I MOST often pull out to plink or pest with is my Benjamin Synrod (Marauder with synthetic stock in .22). The Hill pump still works, but I replaced it with a Air Venturi Nomad pump more than 5 years ago. That pump is still running and I use it to fill rifles directly as well as a small carbon fiber tank. I wanted FX and Daystate when I first got interested in this, but do NOT regret the $500 for the Marauder, $500 for the pump, and $600 Hawke Sidewinder scope.