Bi-amping or tri-amping is always better.
Using an electronic crossover (required) you are able to control the crossover frequency and loudness of high (mid) low separately.
This is a huge advantage over "built in" passive speaker crossovers. It will allow you to get more (or the most) out of any given speakers.
It will make any speaker sound better, clearer, cleaner. It will allow you to protect the tweeters, etc, from the wrong frequencies.
Once you have run your system biamp / triamp, you will never go back to the old way.
(FYI all professional high quality systems are biamp triamp....etc... Consumer grade systems are not.)
AND if you should have time correction (digital delay, etc...), on the crossover, this is even better.
The deal goes like this:
Source, CD....>preamp>EQ>crossover> Low freq amp> woofer(s) in 3 way systems, very often the lows are run in mono, and it works very well
> High Freq Amp> tweeters whatever
However a better system would be:
Source, CD> Preamp > EQ > Crossover > Compressor Limiter > Low Frequency Amp > Woofers in mono
> Compressor Limiter > Mid Frequency Amp > Speakers in stereo
> Compressor Limiter > High Frequency Amp > Tweets in stereo
And this type of setup would be ultimate for home hi fi.
Of course, you guys gotta whine about EQ, Digital time correction, Mono woofers, compressor limiters...but you are actually missing out by not using them.
And you will never realize what you are missing, until you actually try it.
Oh yes, I have built systems up to six way. Powered by 22,500 watts RMS. But you don't need quite that much for hi fi.