After using DaveWS's soundpack quite a bit this week, I've noticed the XRT has a bit of crackling/interference, more noticable on my headphones but its there with the stereo as well. The UF1 sounds a bit like the source sample was too low quality as well - sorta washed out sound. And the RB4 has an unusually loud/linear wind noise above ~90mph. But other than these small problems the soundpack is brilliant, makes LFS that bit more enjoyable