I'm wondering if anyone has used both the original Logitech ultrathin keyboard cover for iPad Air and the new model that has the tilt. The few reviews I've been able to find vary. Some say the new one is the best keyboard yet and others say it's not really better than the old ones, which are currently about half the price of the new one. I know they added a row of iPad keys to the new one. Any comments on whether the typing experience is improved over the first generation one and whether there are any significant issues with the new model?