AlexF has nailed it - what we have here is two visually interesting characters in search of a story.
Tyranny Rex tends to display all the worst of John Smith's excesses - technobabble and obtuseness aplenty. I like most of her stories, but I don't love any of them, and some are unnecessarily hard work for not much reward.
I'm going to surprise myself a bit by voting for The Visible Man. It's a trifle corny and juvenile, yes, but at least it's a straightforward tale, and that's not always a bad thing. It struggled a bit with forward direction, but it did feel like the Flint/Hitchcock episodes were going somewhere interesting.
