Ghz with
good
well.
And you never seen a teardown of a Rigol scope :-)
It seems the used equipment market is so much better at your end. I recently restored a TDS544A but its hardly worth the effort from a financial perspective. And I was extremely lucky someone offered a working color CRT board for an absolute bargain. Perhaps it was the shortest buy-it-now offering on Ebay ever :-)
I've done some repair work in the past but mostly the cases other people couldn't fix. Nowadays I only fix equipment for my own use. Or just convert the CRT or STN screens to TFT screens.