I love it. The shift from 1.13 version is not a big hassle. Joomla 1.5 is more professional than its predecessor.
I think 1.5 is faster than 1.1x, that is my first impression. but overall i can't find significant differences on usability although they do a total rewrite on the codes. I Always need a CMS that can be fully flexible
I should say that it's a great improvement from the previous one. Things are just getting better at Joomla open-source community.
Actually i buyed that themes from Joomlart http://www.joomlart.com/templates_club/club_portfolio/ja_corona.html Code (markup): U can see it over here i think its really one of the best theme i really nice. and NO FLASH is used all is Java based..
I'm still toying around on localhost only, not many difference, but it easier to make template in 1.5 than the 1.0
you can made your own joomla 1.5 template, go to compassdesigns.net to learn how to make joomla 1.5 template
Thats the main reason I still use 1.3, until the coders get 1.5 stable modules and components... I can wait.
Thats What I'm waiting for is all of the third party devs to finish upgrading to 1.5 half of there sites are upgrading. I am about to build a Joomla site and thinking I would use 1.1.3 or whatever the last version was until they got the extensions compatible to 1.5. I am building a membership site so I need JACLplus, Community Builder and AEC. I think CB and AEC are compatible but not sure about JACLplus. The other stuff I want doesn't matter I can wait. I like those guy's at JoomlaWorks they do some cool stuff. I think I will use the template called "Vintage" at Joomlashack. They have both versions. So when I do go to 1.5 I won't have to redo the Header graphics. I am very new at building websites so Joomla works great for me. I can create a very good looking website, pretty quickly using there templates.