Alas, your requirements are too high! Better sound quality, the keyboard requires weighting or weighting, and the price is below 3,000, which is basically impossible.

Look at the MIDI keyboard. More than three thousand is pretty good. The UF series of mid-range speakers are quite good. They cost less than 3000 and can meet your requirements except for items 2 and 5. Article 2: You can find good sounds online and use software sound sources.

If you are doing live work, you can only buy a cheaper electronic keyboard. The tone is just okay, but the key feel is basically impossible~

You can also buy a second-hand keyboard, which can satisfy the needs. What you asked for is hard to find at this price...