This one is okay for single lines, but sounds pretty unrealistic when playing chords. Unfortunatly it messes up cubase sometimes (especially when loading the last preset). DSK has released much better Instruments than that. Anyways: It's free and I found nothing comparable among free VSTs.
This sounds pretty bad to me. I tried using it for background chords, and it sounds absolutely terrible. Completely unusable. Not to be a troll or anything, but I cannot understand what the other commenters here are talking about. The RSE in Guitar Pro is much better than this.
Additional comment: When you consider how much money software-instrument suites cost, I think DSK Instruments are doing a brilliant job. The only downsides, for me, are that they are pretty unstable (in Ableton Live), frequently causing it to crash - and they don't support multiple-instances. But I use them too much to stop using them, or untill I get around to buying a couple of VSTi-suites.