I finally caved and bought Play 6 from EW. And I gotta admit, I like it.
Much better interface, browser is great, its less of a PIA to setup multiple patches and assign them separate to midi channels (it wasn't difficult before, just a bit awkward and annoying), and load times for the samples are a bit faster -- at least on my system.
Now to see if it performs any better than version 5.
I'd be curious to hear other folks experiences with 6...