Seriously?? You have a problem with updates?
Nobody is forcing you to upgrade every time an update comes out. It hadn't been upgraded in months until last week, when it got a ton of new features.
BTW, Platinum is just a cheap rip of All in One from a year ago. It has a few "features" that either don't work (like the 301 redirect) or else are worthless (like putting nofollow, etc on various posts). Everything else is just stolen from other plugins, mostly all in one SEO.
I have not seen much updates of all in one seo plugin.. Now a days wordpress it self releasing updates very fast and plugin authors also need to update accordingly. I still feel it is one of the best plugin around.
The best is All In one, no questions about it. As said above, you don't have to update every time there is an update. it is a good thing that there are so many updates. Many plugins don't get updated until a new version of wordpress is out, and sometimes not even then.