I've been detecting for 32 years. For $400-ish I'd get either a Minelab X-Terra 305 or a Tesoro Cibola and a $6 garden trowel from a hardware store. Both have snappy performance and go deep. The X-Terra is good for giving you information on it's screen. With the Tesoro they are so accurate and quick reacting that you really don't need a pinpointer.
To be honest, having a screen is nice, but a lot of the time it's not what the detector thinks it is. Even with my detectors with the fanciest screens available, I do everything by tone. The best thing any of us are going to be able to tell you actually is to get one machine and learn it inside and out, read the manual, try some test targets in your back yard, then go out in the field and listen for the same sounds, or dig other new sounds you've never heard before. The experience will build upon itself, like building a pyramid. Even when you dig trash, I would hold on to the trash and build a sort of library of things you can bury to listen to on the days you can't detect in the field. I save foil, beavertails and modern pulltabs for that very reason. What you really want is a repeatable and brisk tone, a zip-zip tone, then you know it's small, like a coin or a piece of jewelry. Of course you'll dig trash, but that's all part of the fun, it makes finding treasure that much more rewarding, if you dig 250 pulltabs, then all of a sudden pull up a gold ring you'll be like, wow, that was worth it.
Anyway, I wish you the best of luck with your first detector purchase and welcome to the hobby and the forum!