Mac gear "Slow" or others "Fast"

When auditioning amps I A/B'd Mac and Classe models and noticed the Classe's were more immediate. Classe bass had more impact, but also decayed much quicker. At that time I assumed the Macs were slow and bought Cam 350's and Para S8's. Since then I've heard much of the community agrees that Mac gear is slow, however I'm now questioning that. Mac tells me others up the gain a bit to "pump-up" the sound and that they(mac)present the original track as recorded. Opinions please? I'm trying to decide on a pre-amp- MacC200 or ML320s. Great forum! Thanks