I believe the only TOGO coaster with a heartline twist in the Western US is the Manhattan Express at the New York New York Hotel and Casino. I rode that once and found it to be a bit on the rough side, however I did enjoy the twist element. It almost feels like you are upside down for a few full seconds. Haven't had a chance to ride the Ultra Twister yet. Looks pretty intense to me.
SIncerely,
Jackie Gaughan
Owner of The Plaza
http://www.jackiegaughan.com