Richness is such a subjective term. I don't think you can make a blanket statement that one synth has a 'richer' sound than another. I have both the 1010 and X5DR, as well as about 9 other synths and modules. These two, plus a Kurzweil MicroPiano, I use for quick gigs when loading racks is unnecessary. The 1010 has some good pianos, strings, EPs, etc. The X5DR has much better thick pads, brass, and a Wurlitzer EP that is very authentic. Also a very usable stand-up bass. The term rich can be applied to either box, depending on what sound you're using. Listen to the sounds you will use the most and play them through a rig similar to your own. Then make your purchase. Remember, editing and setting up simple splits and layers on the 1010 is a royal pain in the butt, whereas it is quick and easy on the X5DR.