Turbowatch has the right idea and good arguments to go for active 3way. There is so much flexibity in DSP and one doesn't have to worry about phase alignments, or different slope orders complexity, RLC traps, impedance compensation, etc. In many cases the cost of good crossover parts is as high or even higher than the cost of drivers themselves. Also no voltage/watts wasted on BSC, and 6dB that's a lot of juice. I never got the x-o to sound good the first time and it usually takes a few versions and some fine tuning to get the best out the drivers, so instead of wasting money on bunch of caps, coils and resistors why not just invest the money into DSP's flexibility and it's powerful capabilities. I know some people have the audiophile idea about sound purity provided by passive x-o, but if we take a look professional studio monitors, well they are active, often with compensation curve /correction loaded into them for the given studio.
If you look inside highest audiophile or professional monitor speakers, you will find surprisingly cheap and simple amplifiers. Most cheap D-amps with an external power supply are way more audiophile than those. Have a look at ASR forum and look what you can get, starting at 50$. It is disgusting for owners of expensive amplifiers.