OK, the story continues...
Have been playing around testing all my guitar emulation plugins: so far I have DSK akoustik guitarz, DSK elektrik guitarz, DVS guitar, milkguitar, Plucked String (commercial, Synapse Audio), E-phonic Solostring, SpicyGuitar, String Theory, String Thing 2, Suburban Guitarist and SuperRiffGuitar.
So far I'm going for Suburban Guitarist and DSK elektrik Guitarz for the distorted stuff and String Thing 2 for the acoustic guitar emulation. I will add those to the OP with download links
Does anyone know if Reaper has a midi-plugin for strumming... or some free vst-plug for this?