From the horses mouth :
http://cp.literature.agilent.com/litweb/pdf/5990-7668EN.pdf
Agilent's industry comparison literature between Hameg HMOs and DSOX 2000 lists that latter as having serial decoding and 1Mpts memory.
I am still waiting to find the prices. Looks like I have to rethink my choice of Hameg 2024 in greater detail if the Agilent prices for serial decoding and memory upgrade are attractive.
I wonder how often does an average amateur end up having to search for an elusive glitch in his project to make it worth paying for the premium on the refresh rate of the X2000.
I mean, it's well known that the Agilent has got higher refresh rates, but the discussion about these scopes is not new. Few years ago at mikrocontroller.net this issue was also discussed, and the former product manager of Hameg made a list comparing a few details more. The wfm/s discussion has taken place a few times. To my opinion this is not the most important feature for daily use as for instance the sensitivity.
Agilent does not have real 1mV/DIV, it's scaled (also mentioned in Agilent's datasheet), the HMO series has got real 1mv/DIV with very low noise level. And there are more functions included, options are cheaper.
Nothing against Agilent, but they're more expensive and I don't know if it is really helpful to have an function generator included. I would prefer a decent external arbitrary generator instead a compromise. Also the voltmeter - for what? Would like to see more memory without the need to buy an option.
Only my opinion.
Attached a pdf with another comparison - sorry, German only.