[Notice for possible database guru onlookers: apologies for any simplification ;-)]
*** Warning Geek Talk ***
There's not much point in journalling for a temporary (or static) filesystem but it's very handy otherwise, especially on laptops, which are rebooted frequently.
In my SVR4.2 days, I had never heard of journalled filesystems and became acquainted with the subject whilst using AIX. I'd been used to data integrity by using RAID5 disc configurations but not filesystem integrity. Enterprise databases had been using a journalling system for some time, with transactional processing.
Whilst using distributions in the Mandrake era (now Mandriva), I'd used Reiser extensively. Ever since ext3 became an integral part of the Linux kernel, I been using it. There have been various performance tests, comparing the likes of JFS, Reiser and ext3 but TBH, I haven't really paid much attention. I guess I would, if I was building a real-time or high performance system and look for possible alternatives.
My recommendation to use Mint has stemmed from experiences of quite a few *nix variants. I do think it marries the best of Ubuntu with OpenSuse and is a viable alternative for a lot of users. Relatively simplistic for general use, with enough similarities to Ubuntu, to keep it mainstream.
Just as a comparison, I went through to the desktop "Mandriva Free" today and was entirely frustrated at not getting the D-link USB wireless dongle to search for the router. I gave up and took the laptop through to print by directly connecting to the printer. Just didn't have the time (or inclination) to get it to co-operate.
I noticed that the 64-bit edition of Mint 7 has just been released, so for you people fortunate enough, it's worth a look.

Just skimming the surface
Opinions/guidance expressed are intended to benefit the reader (mostly) but no responsibility should be assumed for the accuracy and no warranty is implied/expressed or given - so eBay may pull this post
Demised responsibility