I bought my EP500 over the competition for a few reasons.
First, Axiom offered a 5 year warranty SVS was 3 years and HSU 7 on the sub and only 2 on the electronics. Since I didn’t know if I would ever end up with a real job (I was on temp orders) I wanted as much purchase protection as possible.
Second, I was sick of speaker shopping after 3 months and if I had to do a return because I didn’t like the Axioms I only wanted to deal with one company.
Third, when I first posted here about making an Axiom purchase several people recommended SVS and HSU might get me “more bang for my buck.” Not only did Axiom let those statements stand but no fanboys shouted them down. So partly out of respect for allowing dissenting opinion (something many other companies squash) I figured what the hell.
Now that the first issue, warranty, is no longer salient I would consider all options if getting another sub.
However, for the price I would be more inclined to go with 2 EP500s/PB12-Plus/ULS-15 or something comparable rather than 1 EP800 as I believe I would benefit more from multiple subs than one more powerful one.
Since the EP800 would, in room, give me 125dB while two EP500s should give me 123dB (Is +3dB a fair estimate for adding a second sub?).
Anechoic (+/-1.5) the EP800 goes down to 13Hz to the EP500 18Hz. (people really finding much below 20Hz?) besides for $400 my Butticker goes down to 5Hz with 1000w beating the crap out of both of them w/o making the rest of the bass to strong. Ask Sean if it worked well for the rumbly scenes.
2xEP500s will help even out my bass 1xEP800 won’t. How about 4xEP500s vs 2 EP800s. I guess if price were no object 4xEP800 would be nice but I think that extra 5K-7k would rather be an even better projector.
Obviously everyone has there own preferences I try to prioritize mine toward what gives me the most utility value.
Also hardly recommend speaker brands to anyone anymore unless they have a very specific need. It’s just not worth the effort. However, if someone asks about them I highly recommend Axiom.