Was the TARDIS a geriatic or a baby when One stole it?

[C.E. Evans]

Isn't it insane that Archer's Enterprise was mothballed after 10 years in space while Kirk, Pikem April, Dekker and Spock's Enterprise was kept on the line for over 40 years?

Not really if we go with the idea that the NX-class was the end result of the original NX Program to simply develop a Warp 5 starship over a 30-year period. The mission of the NX-class may have been just to serve as a testbed for new technologies to be incorporated into later starships.

Like the only-one-of-its-kind X-303 (a.k.a. the Prometheus) on Stargate SG-1? (After the Prometheus prototype, the next 4 Earth starships have all been X-304s, Daedalus class.)

Of course, it was always clear on Enterprise that the Enterprise was pretty crappy compared to what the Andorians & the Vulcans were using. Once the Federation was formed, Earth's Starfleet was absorbed into a unified service with the ships of the other, more advanced races. At that point, no way would a tin can like the Enterprise still be the pride of the fleet. The NX-class was supplanted by the new Warp 7 ships. Perhaps the other NX-class ships that had been built were phased into lighter, more local duties for a few more decades while the NX-01 was given the honor of being immediately decommissioned and turned into a museum.

Works for me. It would also explain why Starfleet went nearly 100 years without an Enterprise.

Personally, I've always fancied the Rani's TARDIS. While the Doctor's TARDIS was generally very functional (when it was functioning properly, that is), the Rani's TARDIS had more of a bit of style to it and was sort of geared more towards scientific research than just flitting about...