I got the oscilloscope and the Ardunio board yesterday. I should have gotten them Saturday but I was out when the postman came so had to wait for the Post Office depot to open at 7am Monday.
Not much to say about the Arduino except, its bigger, has more pins and will allow me to connect up the whole of the Z80, the SRAM and EEPROM chips.
The oscilloscope is amazing! It's so small but full of features, and despite the small display is actually very readable.
Heres a pic of them both: