I recently thought about upgrading from CS4 Design Premium to CS5 Production Premium.
The CS4 Design has about 2 Programs I almost never use: Dreamweaver and Fireworks
The CS5 has 3 Programs which would be new: Premiere, After FX and Soundbooth.
But I will still need InDesign. There's not so much new in InDesign CS5 that I would really need (most of it is do produce interactive stuff, well I still use it acutally for print).
The question now is:
Can I upgrade to a different Suite and still use old Programs that are not part of the new Suite?
Example: I upgrade from CS4 DP to CS5 PP and still want to use InDesign CS4 - is this possible?
So it seems that it would actually work. I will still be able to use InDesign CS4.
But it seems that I can't upgrade InDesign seperately as a "single product" when it was part of a Creative Suite before.
The Master Collection is just much too expensive (in Europe we have to pay almost twice the price for that!), so that would be my choice.
If I had MC CS5, the next update then would be also super-expensive, because it's always like 1000+ €
So jumping between different types of suites could be a way to get most of the products although some of them are one version behind. Which shouldn't be a big problem, because some new features and improvements don't really justify a full paid upgrade (like in InDesign... most of it is about creating Flash-stuff)