I had some low end stuff too bro.(Behringer Bass V-AMp, Behringer Tube-pre, PD7/SanAmp BDDI) That were supposed to emulate all the high end stuff.
But my friend gave me a piece of advice, "Just get the ultimate one and stop there. Than you can stop buying all the products that try to emulate it"
The Bass Xciter's purpose for me is to "correct" the amps that I use(Jamming studio $practice amp)till I get the balanced sound I want hence making a cheap amp "force" out the best sound.
Than I run whatever else is in my signal chain after fine tuning the amp.
Unlike BBE's aural xciters, Aphexis better at handling the low end does not overload the speaker like the BBE, but BBE has a overly dead quiet clean signal.
Bass Xciter is on a different league as the SansAmp. It is used to squeeze out the harmonical frequencies(not exactly frequencies like an EQ) out of the amps. It's like a musical version of an EQ. "Excite Frequencies" so they say of a typical Aural Exciter.