I have to agree with idea mentioned earlier (was it you, Xeno?), that it all depends on what you're doing with Poser on which version does it for you.

There is a lot of baggage in Poser 4 (not Pro-Pack) that makes it troublesome to use.

Certainly the crosstalk.  'nuff said.

Library .rsr's - undecipherable in Windows unless you use P3DO and you have to go through hoops to make them pretty (if you were inclined to) by converting them from .rsr to .png to .rsr again. 

Geometry .rsr's - Get corrupted often causing you to remove them for Poser to make them again.  It's file bloat since you have the .rsr's and the objs along with them.

BUM Files - Huge, bloated bitmaps.  Again you wind up with extra files, having to convert jpg's to bums.

No Python - For me, that's a big :(  Python has vastly improved Poser's capabilities and usefulness and P6 python is the best so far.

I like all the other little things P5 and P6 have to offer too - I'm not talking about the extra rooms (they're cool in my book) but things like dial organization, splitting morphs, open gl display (P6, of course, and much better to use if you have a good card), render wipes - tons of little tweaks.

Again, someone pointed out that you can use the simple material mode in P6 and render using the P4 renderer (it makes good, fast thumbnails anyways).  I think some folks might be trying to push all the advanced firefly features to the max when they aren't always needed to get a great render and then wonder why it takes so long.  ;)

Really I can only speak for myself but I don't see the need at all to hold out unless you're only in Poser long enough to get something into vue or you have an antiquated computer system.  But to be honest, as far as the computer thing goes, you really need to have a mid-grade computer or better to stay in the 3D game - that really enters into any pasttime where "technology" has a hand in things.

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