Hameg oscilloscopes, endorsed by knobtwiddler and Angela Merkel. It doesn't get any better than that
The Tek 7603, with its lovely big screen, has a lower acceleration voltage than the smaller 7000 scopes such as 7904 / 7854 etc. Consequently, they have sharper traces. I got a 7623 off a member here and it's razor sharp and generally a good workhorse (it's not as sharp as my baby Kenwood - nowt is as sharp as that).
Attenuator switches can be an issue with Tek 7000s. They might need a clean.