Hi Beepster...
Yeah, they are a bit of a dead end as everyone has already mentioned that they are DX...
They were really cool "before their' time" plugins that never got any further development as the public (mostly) ignored them...
The amp simulator isn't bad... No cute gfx and minimal choices, but it can work well when coerced... Same with the tape simulator... Each with a sound all it's own...
the most impressive (to me) was always the FX3 which with a little more development I believe would rock the market to this day... the ability to graphically place a source and mic position as well as customize the room to your heart's delight! I loved this one and used it often...
What it was sorely needing was a way to map each source's entry into the room via the graphic representation... I guess that was (is?) too much to ask for, but I find this one a lot of fun to work with...
I haven't tried it in either of the X versions yet being overwhelmed with simply getting around the X-UI... but I plan to try again... With a vst wrapper of course.... ;-)
Keni