When evaluating 'scopes last year I tried both the R&S HMO and R&S RTM scopes, they are very different 'scopes.
R&S RTM scopes (we evaluated the R&S RTM 2034) are IMHO better than the Keysight MSO 3034T (the default company 'scope, at the same price point), and has the well designed and finish and feel of R&S kit I'm used to.
R&S HMO scopes (we evaluated the R&S HMO 3054), the HMO 'scope are targeted at a lower budget and present good value at that price point, but it is a step down from the RTM and RTE scopes.
In short it feels like HMO scopes are still Hameg scope with an R&S label where as the RTM scopes feel like a full R&S quality design.
On a separate note, if you need a battery powered 'scope the MicSig TO1104 makes a good offering, (my first home 'scope I bought just over a month ago).
There is an investigation of the licensing/hack in this thread.
https://www.eevblog.com/forum/testgear/micsig-tablet-oscilloscope-tbook-mini-to1000/I also put a written review in this thread giving my thoughts on it, but the Mikeselecricstuff review above is much deeper.
https://www.eevblog.com/forum/testgear/micsig-to1104-(similar-to-rigol-1104z)/