Crain,
Perhaps ID'ing AM stations is easier on the less-crowded Western dial, but how much do you need to hear before you positively ID a station? For me, I always like to hear at the very least one or two local mentions, area codes, etc. in a commercial. If it's a music station, I always try to see if they have a webstream, then I like to ID one or two songs back to back. The 'slam dunk' of course is if I can get a positive call letter mention. Those are the only ways I will log a station. I just don't know if I can hear one format or program on any given frequency and assume that it's what i'm hearing. Unless if it's all polkas or Radio Disney, then I can usually figure it out.
When I started logging AM stations in late 2005, I was also confirming 6-7 stations a day. It gets harder to ID new ones once you've made it to 750+ loggings, but at this point it makes it more exciting to actually confirm one you haven't already heard. It was very exciting to confirm KNX in my location earlier this week. I don't know if I can top that one, but i'm going to try. I'm looking at KNBR or CBU now. Both stations look to throw a decent amount of power in my direction.
Keep it up with the DX'ing. Not too many of us anymore and it's actually pretty cool to hear from someone who is obviously very passionate about the hobby.