Phil,
I did not read your post until today, thank you.

It is certainly an in-depth explanation. I have been using an IPad and a 17” HP laptop. The 17” screen is a bit too large; the IPad is almost usable. I feel I do not have the temperament to work with the IPad when playing out; it is too sensitive to touch. I thought a 13” or 14” screen would do the job, but you have me tempted – I may go for the 15” screen.

I am going to study what you posted, thanks again.
John C.