Comparing:

on the long term, the initial buy does not really matter. I've seen free versions of Poser in the past. Let's assume no rebate, bi-yearly upgrade from previous version.

MD Personal Advanced: $60,- a month = $1.440 over two years. When paid annually it's 50% off, presented as it looks a temporary rebate to me. Somewhat down, a major upgrade costs 275,-. If the latter is a serious structural price to be paid bi-yearly, then the monthly rate doesn't make any sense to me. So, what's up? 

PPro: $ 250,- bi-yearly

Poser: $ 80,- (which still does include the complete Cloth Room)

Licence: MD personal allows commercial use, even when you're a freelancer, but not when you have to be considered a legal entity. Then an Enterprice license costs $3000 (one off, excl upgrades). In real life this will usually mean that when you're an artist into imaging, all is fine. And you might sell an eventual Poser morph as well. But when you're into garmenting itself, even individual artists will be an 'entity' for legal or fiscal reasons alone.

But whatever the details, I still have the opinion that MD is a good product in a league quite different from Poser Cloth Room. As V-ray is a good product in a different league from FireFly, and so on. So I don't favor simple comparisons.

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Usually I'm wrong. But to be effective and efficient, I don't need to be correct or accurate.

visit www.aRtBeeWeb.nl (works) or Missing Manuals (tutorials & reviews) - both need an update though