I also just switched over from a storm town Eris and have to say that I am quite impressed. There might be the slightest lag but it is really not all that noticeable. The interesting thing is that I honestly was happy with my storm as of yesterday, but had the opportunity to get one for free, so I bit the bullet with partial intentions to sell it.
Honestly this device does everything well, the keyboard is amazingly accurate and quite pleasant to use.
Does anyone know if the recent. 2.1 update will be for the Eris too?