It's as subjective as picking a favorite color, and your speaker selection should take your room into consideration, so take most of our specific favorite recommendations with that in mind. You really need to satisfy you.
I'd spend most of my time and budget finding a pair of speakers you love that will work well in your room, then focus on an amplifier that will drive them. Add music source as money allows.
Buying good used gear can lead to some great bargains.