Hi Scott...I have been following you wants and needs in a Replacement keyboard for your aging Tyro's...I highly recommend the Korg Pro...Notlo's is a MasterMusician! WOW...
THe Pro Has everything you have been looking for...Great Sounds,Fantastic Styles,Your Jazz Root Stuff,Pro Build,Great Support from Italy,The Piano Expansion gives you the Great Bosendorfer Piano's, plus The Steinway Piano's can be purchased from Irish Acts for $25.00!...They are Excellent!!!...Plus the Board has weight, but is very easy to handle, it's balanced very well,a thin board easy to grip when moving about...
I think your search for a Pro board can end!...Buy the Korg Pro!...I believe George Kaye sells them...He has Excellent Prices and Support, plus a Man of great Character and Itegrity!....Best Wishes...Harold