Not "High Quality" but they work
I use a trio of Furman Sound TX-3b's for my active x-overs.
One band I worked with in the '70's used the Crown VFX-2A. They only went biamped in that setup.
I split off at about 100-125 for the subs - that goes to the Crown PSA-2
The other 2 run stereo 3-way for the e120's (DC300A), 2350/2482 (DC300A), and 2402 tweets (Marantz).
Gets the job done and I get to play with crossover freqs and such whenever I want to.
The gear you guys are talking about is WAY pricier than my vintage gear setup.
But give it a shot - you'll be pleased! Just be sure to use as much power as you can buy! Clipping SUCKS!