I'm going to have to say etek 5, it has a larger volume chamber than most poppets other than the lv1, and it should be as quiet as a spool valve, so if you are concerned about the noise of the poppet the Planet Eclipse Etek 5 if definitely worth considering. If you are willing to go used the options are very numerous, but it sounds like you want to buy new, so the etek 5 would be my choice. But if you're dead set on buying a spool valve new I would say to go with the Macdev Drone 2. The Empire Axe is also really good, I just can't personally recommend it as I hate the ergonomics, but it is one to consider. You just better hold it and shoot it if possible before you get one. Though that can be said for any marker, as personal experience with the marker is always best before you buy it. So your best bet would be to go to the field and ask people who have a gun your interested in if you can hold it and shoot it, and find the one you like the best and can afford, and then choose that one, as buying a marker is more about personal preference than it is about one being the best.
I would get the hopper next, as I find the rental air tanks are fine, sure the carbon fiber tanks are more comfortable. However, I prefer the consistency that a good hopper adds, my personal recommendation now is currently the machine gear, as you can now find them for $125 new with the updated parts. Sure people complain about the shells, but I don't see me breaking mine any time soon. I'm sure if I tried to break it I could by ripping off the top shell improperly with an unreasonable amount of force or throwing the loader on the ground (but I wouldn't be playing paintball to do so). However, playing paintball the loader feels quite solid and I tend to play snake and dive and such. But if you tend to abuse your loader (meaning not playing paintball, dropping, throwing, etc.) or perhaps have a loose feed-neck with your loader flying out on occasion a used rotor would be a better bet. As far as feeding paint goes, I believe the gear is the best loader out there at the moment. It hasn't and should never jam, has fed the last ball every time I've ran low on paint so far without any shaking, and it feeds fast and consistently. Though if you're on a budget you can get a used pinokio for around $50 and $65 for a used speed, or a used rotor will be about $85. There are plenty of high end hoppers to choose from, so don't let my bias persuade you. Just choose the one that feels best for you as all the high end loaders are quite excellent.