I hate advising people to buy gear based on a popularity contest.
If most of the music you listen to dictates that you are a stealth taper, my vote goes for the R09HR. Advantages are (supposedly) a better analog input section than the Sony, and SD cards instead of those oddball sony cards. Plus it really is quite a bit smaller, and half the weight (7 oz versus 13oz per their respective websites).
If you anticipate getting more into "open taping" with big mics and preamp, the digi-in on the sony allows for future growth.
Here is a tape my friend made with Church Audio STC-11 (same as CA-11's right?) stage lip, directly into the R09HR mic in with no preamp. That's pretty small.
By the way... a big difference between omnis and cardioid mics. Omnis pick up all around, and in the right setting they are great, but in the wrong setting they are all crowd chatter. Regardless of the brand you buy, that is the case. If you can get cardioid mics pointed in the right direction they will pick up less noise.