I totally understand your dilemma. The newer undermount sinks require the taps to be mounted quite a distance away to accommodate the gasket that holds the taps in place. The result is having to hold your hands at the back of the sink where the spout flows, only to end up splashing water all over the place. The designers gave no thought to the fact that with undermount sinks, we require taps with very long spouts. We consumers need a group to lobby manufacturers to think first about making things functional and easy-to-use, and to then worry about how nice they look. Hope you have found something that works. I am now searching for a transitional style in chrome with at least a 6' spout for my next reno project!
Q