Well... just installed the trial again, shutdown all running applications, and clicked on the default icon that I allowed the installer to place in my Quick Start area (labeled Take Command 9). I did this three times and found that it takes about a second for the nag screen to appear. Once that counts down and gives me the option of continuing the trial, it takes 8 to 11 seconds from clicking "Continue" to having the GUI opening up with a TC tab available. Quickest load time was the second one and the slowest the third! I hadn't started any programmes in the interim. Just did it again with this window (Maxthon 2 with five tabs open) and a Dopus 9 window open and TCC 9 took 9 seconds to load after the "continue" trial button was clicked.
Running 4NT.exe from within the JPSOFT/TCC9 folder under Program Files opens 4NT instantly (no nag screen, either, whereas TCC pops up that nag screen each and every time)... Crap, I'd forgotten how much I like 4NT! (Note that 4NT opens instantly every time, including just now with Dopus, Maxthon AND TCC9 open).
A nice touch: I right clicked to see the context menu and, in 4NT, it automatically pasted the content of my clipboard, which happened to be a web address (XYplorer forum for those who must know). I hit enter and my browser opened to the page. Neither PromptPal nor PowerCMD do this (I'd never tested it before, though I know earlier versions of TC and 4NT will do this as well). Interesting that going through the same steps with TCC9 varies in that I have to select "Paste" from the context menu, but otherwise the behaviour is the same. Disabling "Quick Edit" and "Insert" in 4NT's Properties dialogue (Options tab) reverts 4NT to presenting a context menu when right clicking within the window. With the Quick Edit feature enabled right clicking within the window pastes content and right clicking on the programme's title bar presents the context menu.
For my needs, all I've ever really looked for in a command line tool is the ability to do things like paste the contents of my clipboard at the cmd prompt (I can't believe MS didn't allow this in Windows command line through XP - no idea about Vista. At least it's available in PowerShell), so I've not really used the underlying power of TC/4NT... Not sure I want to spend the money to upgrade to version 9, but I think I'll reinstall 4NT 8! I'd been seduced by the availability of the tabbed interface when I upgraded to the bundle for version 8 and for some reason hadn't linked the slowdown in opening it to that...

Thinking back I probably used the tabs a total of two or three times, so no pressing need for it.
Hmm... the dialogues and context menus presented in 4NT 9 are the same as in Powershell. Interesting. I'll have play around with the two side by side...