I have looked at both meters specs, and I am assuming you mean the Keitley 2110-220 because that's the only specs google provided on my search.
I bought a RIGOL Digital oscilloscope just a few months ago, and I am still impressed daily about the capabilities of it. I added a current clamp for it, with BNC connector, witch greatly improved the functionality with 4 channels. But I assume you already have an oscilloscope.
The first thing that surprised me about these benchmeters is the pretty high price, but that seems to be justified again when looking at the specs. They really are very accurate meters, and great to do 4 wire resistant measurements. The one thing that I can't understand is that the RIGOL needs a "warm-up" time of 30mins while the Keitley doesn't even mention any "warm-up" time. Although I personally have never heard of the Keitley brand, witch doesn't mean a thing, since allot of companies have merged, changed their name and other things in this industry over the past years I would go for the Keitley, it provides excellent PC software included. I'm sure RIGOL has PC software too, but I didn't see anything mentioned of it in the datasheet. Maybe somebody else has. My oscilloscoop came with a CD, mainly to connect to my LAN and then connect my PC to the oscilloscope.
I personally would be happy with either one of these great Multimeter Benches