Honestly the included AD sounds good and is easy to use but it doesn't offer as many options in regards to routing and other stuff as my copy of BFD Eco (so it's a full version of a program being compared to a limited version of the other). Also I am somewhat addicted (no pun intended) to Platinum Samples drum packs because they sound sooooo good and there is a ton more choice compared to the specific XLN produced packs.
XLN Addictive Drums was going to be the sampler I bought to replace Session Drummer (which is nice but didn't work for the fancy ultra nuanced stuff I like to write) until I was turned on to BFD. So personally I would rather upgrade from Eco to BFD2 (if I can still find a boxed upgrade somewhere) and still have access to my Platinum Samples packs as opposed to upgrading to AD2. I kind of find their new website, installer, reg, marketing stuff to be weird and confusing too (and I don't seem to be the only one who thinks so based on this thread) which is a bit of a turn off. I had a heck of a time just creating an account and getting AD installed.
The ONE (or technically two) ADpaks that I am however interested are the JazzPaks but I'm sure I could find suitable alternatives using BFD and its more open policy in regard to third party samples.
As far as having access to all those different MIDI files to trigger it all... well I do like how AD handles that and kind of like the included beats better but I usually write/play my own drum parts and if I wanted a MIDI beat generator I think my money would be better spent on something like JamStix. I like the idea of setting variables and getting a live feel for my more improvisational work... particularly blues and jazz stuff. Static beats don't inspire much creativity.
As far as the CA2A on Linux... I was under the impression that some of those Linux DAWs did have VST support to a certain extent but I'm guessing that being a Cakewalk product that despite it being VST it might still require windows to run which is a drag. I don't know how such things work though.
And your mood is fine. I think I've been far crankier the past couple days. Too many shiz disturbing sock puppets on the forum and extraordinary temperatures closer to home I guess.
You're good shiz, G. Don't ever change.
Cheers.