I just wanted to chip in my $.02 on this one. In my opinion, glass cockpit training/TAA training and experience is extremely valuable when it comes time to begin training on an RJ. Almost all of my dual given was in G1000-equipped airplanes (I did the whole FITS certification for G1000), and have since gone through training at 2 airlines. I found that my foundation of experience with glass, FMS, autopilot/flight flight director, AHRS, ADC, etc. made the transition to the jet very smooth. The number one problem that my classmates had when it came to getting through training was learning to properly use and understand the automation, whereas for me (and my few classmates with TAA experience), automation was second nature. Can you get through training without TAA experience? Absolutely you can... But having some experience with advanced equipment is, in my opinion, invaluable. In summary, I'll say this: If you have an opportunity to fly glass, or better still to instruct in glass, its well worth a few extra bucks. At the very least, even if you don't do all your training in a TAA, you may find it worthwhile to at least log a few hours in one. One thing is certain: the era of the steam gauge is in its twilight.