Hi,
I can list the advantages, whether they are enough for you, you must decide for yourself.
- True 12 bit resolution without any "tricks", it´s not "only 2 bits more"
- ERES and Average in Acquisition menu, instead as a math function
- Memory Management: Auto-Mem, Fixed-Mem/Samplerate
- DVM (Digital Voltmeter)
- Digital Filters, HP, LP, BP, etc
- Way less noise because of controlled fan
- More "heavy" building, look and feel, better incremental encoder
That's what I just thought of now, I may have forgotten something else.
The chances are also not bad that future features from the "big ones" (6000A) will also find their way to this model, because the performance might still allow it, but that of the Xplus no longer (see also memory management, filter).
You also have to remember, for the money you get the 350Mhz model SDS5000X.
With 5GSa/s and the "Pro bus" interface (do not know the exact name).
But that has 8 bit only.
I (who owned an Xplus) faced this decision 6 months ago and took the HD, to date without regret.