Hi andre,
I concur with the observations made both by santantoni and adimatis regarding the o/s and features,having had aTyros 2 I now have the Roland E80 coupled to my Psr3000 and find navigation even on the fly is as straight forward as Yamaha, apart from as already stated the user programmes and file system which does take some getting use to.It is important that you give both boards a through audition as the sounds and styles on both boards are good,it is only now some three months after purchase of my E80 that for me I know my choice was the right one.The Roland and Yamaha are really to different animals and is does take time to really appreciate and enjoy what both boards can offer,In the end it will come down to, what board will fulfil your musical needs.
Best Regards Gilbert