I upgraded from the 228be (I also use two subs) to a pair of JBL 4367s. I should note I liked Revel over a lot of other good brands and after many demos stuck with the Revel/sub combo before moving to the JBLs
I have a number of posts about the 4367s that you should be able to find under my profile or general search. In short they are much more dynamic. The 4367 is much more detailed in the bass and treble (about the same in the mids). When I first listened to the 4367 I thought there was a bit of horn coloration in the vocal range but doing more or less instant switching between the 228be and the 4367 that coloration is extremely small and mid quality is about the same. but the other improvements were drastic.
they look like big ugly boxes and are but stereophile’s measurements show a pretty quiet box. For measurements I would look at Erin’s Audio Corner though. Stereophile’s near field measurement artificially boost the bass IMO. I used subs with both speakers crossed at 60hz. The 4367 has a lot more detail from 60hz-250ish-hz where the Revels woofers play.
the one place the 4367 loses out is sound stage width and depth. The 4367 dispersion is pretty narrow and has a lot less room interaction. The sound is almost all in front of the speaker too (part of why they are so dynamic IMO).