Just want to take a moment to put my .02 cents in on the 1/2 points you have
1st, wordpress has the easiest user experience of all the systems. I know some retarded ass people, and the only solution that works consistently with their stupidity is wordrpess. hell look at [secondthought-notsaying].com, they crank out content and they are all retarded. joomla is actually too hard and complicated.
1) slow
SOLUTION: identical solution to just about every php based framework (even some java ones): use nginx, memcached, php-fpm, APC and a well tuned mysql db. never ever use Apache, just in case you do. it's garbage. I can handle hundreds of concurrent connections a second for hours at a time on machine that only has 1/2 a gig of ram. without the right memory management and server side work, you will never be pleased with the ultimate result of ANY CMS. Don't care how awful your code could be, or how fat your template is, if you have distributed memory cache, your site will load fast as hell (so long as you hold that cache for a long time)
PREFERENCE: I prefer wordpress, i manage many sites running it. It is extremely easy to manage, write custom plugins, and with a good permalink structure, easily slay the majority of SEO expert consultants out there simply by organizing your content well.
2) seo crappy
SOLUTION: organize your content with volume related url structures using re-write rules. write a post, assign it to the child category of potentially several parent categories, who happen to have the grammar and keywords you are looking for. Make sure your sitemaps take advantage of that most importantly, which may mean not including content on an individual basis from the sitemap. let the social network world handle the individual posts.
