Bill:
Sorry, I'm still using a PSR-2000 (with annoying warble you mentioned) but someday soon, when I get one of my new songs discovered and make a million or so dollars, I'm gonna upgrade.
Seriously, I appreciate your comments and information. The media card is a nice feature and I'll keep checking in with you from time to time to see what else you like about the 1500.
Regards, RICE (The Lone Arranger)