Well, as advised above, I am back from Taipei; the numerous posts above have pretty well covered m most of what I have experienced so just a few observations:
- this is the first time I have been there since the MRT airport express opened, and it is great; 35 mins to/from from Main station to the airport for NT150 (~AU$7) each way.Also there is a "city checkin" facility at the station (a la HKG) which I used and worked well.
- a good choice for a tour of Taipei is
https://www.viator.com/tours/Taipei/Private-Taipei-Chartered-Car-8-hours/d5262-40100P15; you can tailor this to suit your particulat interests.
- just use ATM's for getting local currency; I had no problems doing this.
- one interesting thing I noticed was that in the forecourt in front of the CKS memorial there was a display consisting of a blowup rubber person standing of a blowup rubber tank, a reference to the 30th anniversary of Tienanmen square; calculated to annoy the Chinese no doubt!