My first impressions of the Gen 3 are very favourable - apart from a sore thumb. In just 30 mins of reading my thumb was hurting and I knew I wouldn't be happy until I got it sorted.
My solution was to use a chisel-shaped ink eraser. This is firm enough to press the page forward button without damaging the device.
Another thing I noticed was that the page was whiter with better contrast than that of my iLiad. The iLiad is a first generation device and has had long daily use since I got it.
I am very pleased with the way HTML files flow nicely even though they cannot display images yet.