Plus, it depends on what you already have.. if you have just P4, then buying poser pro while it's on sale makes a world of sense over buying P7.

If you only have DS, then by the time you pay for 20 plugins, you've already paid for poser pro, which has a ton of additional export options, the powerful material room, rigging ability, universal pose converter, morphing bruch, dynamic hair and cloth, just a TON of things ds doesn't have.

Way too many people take way too many things way too seriously.