Bill,
No, I didn't really feel like it was worth the extra $1k for the touch screen. But I did opt for the engine monitor board, gps, and ADS-B. While the engine monitor provides redundancy, I really like the aural warnings it provides. So, I don't have to fly with one eye on the EM-2 and one looking for traffic. My purchasing logic was to go with the "big screen" so that I wouldn't need a second screen. So far, it appears this will work out just fine. I'll be using ForeFlight on a iPad for moving map, flight planning, weather, etc. It would have been helpful to have the extra serial ports a second screen would provide as the AF-5800 is limited to four. Five serial ports would have been optimum, but a work-around was done to make this work. I hope to fly it for the first time this weekend.
I didn't weigh the two units, but I would guess the AFS is about 5# lighter than the BMA. AFS gave a 30% rebate on the old BMA unit, and I didn't even have to ask. Great customer service too! I highly recommend AFS. If interested, call and ask for Trisha Blank.
Mark