Has anyone used the Rob Papen BlueII vst? I watched the demo and the capabilities look endless but I was wondering if I could get a more specific recommendation.

I love it too. It's cool when you get bored of traditional FM8/Sytrus FM. It has interesting waveshapers for OSC waveforms, version II plays back some factory multi-samples and over all the whole take on FM is a bit different in there. Also the sound is different. I wouldn't recommend it for sub basses too much, but it's nicely creamy for anything else.

It will need a bit of getting used to if you want to use it for "from init" sound design. You need to route the path to and out of filters etc...

i have no idea how to actually use the synth but its one of my favorite synths for presets. Extremely unique sounds.