Gentlemen,
The performance of the TP2 has got to be seen to be believed. It's more than an upgrade to the TP... it feels and performs like a completely different device.
I'm not exaggerating. It's really something else. Almost EVERYTHING is faster... and this is a stock ROM!
I heard a rumour about a huge gigantic pagepool that was instrumental in making the device perform like it does. Whatever it is, it's making WinMo scream!
About TomTom: I do use it, and find that the 3D view is about the same as my TP (a few fps), but it loads 75% faster and calculates routes about that much faster too.
By the way, those enhanced 3d drivers are for real. You have to manage to find a piece of software that actually attempts to use true 3d rendering (like Spb MobileShell3 carousel view)... but holy crap. I've never seen anything rendered so smooth on a WinMo device (speaking of the aforementioned example). There are demos that come w/ those driver packs. Try them. It might just cure your cynicism.
If it's within your means, upgrade. You won't regret it. I ditched my TP early and suffered a loss getting this thing, but the one and only thing I miss is having a flashable device.