CS3 isn't that great. I've got it, CS and 7. I have yet to find anything since 7 that I could actually use to justify an upgrade. CS3 is actually the first one I purchased, but it was part of Creative Suite, otherwise I could care less about having it.
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'13 Mustang 3.7V6 - MT82
'00 GP SE (L67 Swap, XP, Headers, 3.25")
'98 GTP, '01 Bonne