I don't know if it would help or improve things better for you, but for years I have been using the Finder menu ClipMenu that I find invaluable for multi-clip clippings and pasting, and using it to Paste whatever I had copied seems to work well with everything I have ever tried:
ClipMenu.com: A clipboard manager for Mac OS X - ClipMenu.com

But maybe it's not exactly what you were after, but I couldn't work without it.
As for the Mac OS Accessibility, I use some of it, especially their Dictation, but unfortunately, the Google Chrome extension Voice In works much better and requires a small annual fee, but only works in Chrome applications, but I rely on them both due to the severe rheumatoid arthritis and gout that I have in my hands which makes it hard to type.
Here's hoping your new Mac works out for you...
- Patrick
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