Nokia E90 or PDA

The past 5 years I have only had PDA phones until now. I found that speaking on these phones was quite difficult as there was a lot of background noise on the other end. The PDA's are really easy to use. The great thing about the PDA phones is that you can easily navigate from the phone pad, or from touching the screen. They generally run on Windows Mobile which is highly effective especially for office use. It is easy to move files around back and forth with a PC and Excel, Word, and Power Point documents are extremely easy to open on the phone.
I was a little unsure about going back to the Nokia range which I hadn't used for at least 6-7 years.
The Nokia E90 is one of the best phones I've ever used. It is quite a heavy phone but feels really solid. It feels like a high quality phone, and unlike other phones, you can notice the quality. Navigation is really easy around the phone as well. The key pad when you open the phone has the QWERTY lay out. The keys are small as can be expected but are easy enough to use. I have found that the connection ports jump around a bit. I also found that the push email wasn't 100% reliable, but that could be a provider issue. It is easy enough to sync both Work email and web based email to the phone. The Nokia also has its own set of office tools, they do the job, but its not as good as Windows Mobile.
Over all, I would highly recommend this phone, I would give it an 8 out of 10.