After having another fiddle with both Voyager and Deluxe Primes today, the Voyager really is the better figure. I take back what I said before about the transformations being very similar -- there are some similarities, mostly in the legs, but the rest of the transformation scheme is substantially different from the Deluxe.

Between the Deluxe and the Voyager, the Voyager wins hands down. The only nice thing on the Deluxe is the striping on the top roof.