485s are indeed nice scopes, but you do need good probes - and good probing technique.
You will note your image shows there are three broad
classes of probes in your image: FET, "low" impedance Z0 resistive divider probes, and traditional "high" impedance *10 probes. It is worth understanding the characteristics of each class, and when they are applicable.
Once you have decided which
class of probe suits your applications and wallet, to a
first approximation they are all much of a muchness.
It is possible to DIY your own Z0 and FET probes, but the traditional *10 "high" impedance probes are tricky - and are a
lower impedance than "low" impedance Z0 probes!
Some resources about probe theory, use, safety and DIY are at
https://entertaininghacks.wordpress.com/library-2/scope-probe-reference-material/