Hey Tinu, couldn't sleep so thought I'd follow what you've been blogging via Facebook. ;-)
I've switched from PC to Mac early 2007 and loving it! Came across several switching inconveniences too, one of them is screencast software (as I was also a Camtasia fan).
After testing about 4 of the third party Mac apps for screencasting, I chose iShowU (by Shiny White Box) - works fabulously for me and I created more than 70 videos for StomperNet with it.
Also have Jing and works great too. Too bad I don't have options to download video in more formats than just swf. Oh well...
Techsmith (creator of Camtasia and Jing) claims to be in development of a Mac version of Camtasia. (fingers crossing)
Goodnight/Good morning Tinu - catch ya on Facebook ;-)