I assume by warm airy musical speakers you mean less box coloration that provides an open sound. The Alon speakers meet that criteria you can get a pair of Alon IIs for under $800 or even less just to hear them. My overall opinion is that the preamp controls the sound of your system and should provide the musical sound open with air, clean sound with macro and micro dynamics, definition, bass, etc. It is also my opinion that very preamps can produce this that is why most try cables, speakers, different sources to achieve this but only find they can achieve this with specific recordings. That is why I am a fan of direct heated triode tube preamps which I also build. The older alons may offer what you are looking for in an affordable price range to see if they float your boat.
Happy Listening.
Happy Listening.