Any benefits to using Ext4 over Ext2 on SSD, or USB flash drive?

Hi.
I've been using Linux on, and off, again for about two years now, and I never really bothered using anything outside of the extn file systems.
I had at one point only used ext2 only on usb installs, and usually on temporary installs of RIPLinux, Parted Magic, or Puppy Linux.
But... now we have the option to disable journaling with tune2fs, or at the very least mounting the partition with options 'noatime', 'barrier=0', or 'nobh', should we use ext4 for any of these devices?
Are there any ext4 improvements over ext2/3 that would actually apply to SSDs, or other flash devices?
Right now I'm currently running Arch from an USB. It's being used to stream media to a video game console, download files in the 200 - 500 MB range, and act as my media viewer for movie files. ie - mpeg, mp4, mkv, and flv. My original idea was to have a future proof system setup that I could eventually clone over to my replacement hard-drive when it comes in the mail.
Should I just make the switch back to ext2, or does ext4 have benefits over ext2 on these types of devices?
While I'm considering a persistent journal disable, my only Arch partition is mounted as follows in the fstab.
UUID=546043fd-170f-4ed4-8af0-136113627e8c / ext4 defaults,noatime,barrier=0 0 1
tmpfs /tmp tmpfs defaults,noatime,mode=1777 0 0
tmpfs /var/tmp tmpfs defaults,noatime,mode=1777 0 0
tmpfs /var/lock tmpfs defaults,noatime,mode=1777 0 0
tmpfs /var/run tmpfs defaults,noatime,mode=755 0 0
tmpfs /var/cache/pacman/pkg tmpfs defaults,noatime 0 0
tmpfs /var/abs/local/yaourtbuild tmpfs defaults,noatime 0 0

midenok,
Welcome to Arch Linux. Take note that this is an old thread (but not overly so). When reviving old threads, we generally encourage creating a new thread and linking to the old. In this case, your answer is pertinent to the thread, and that thread had not reached a logical conclusion, so you are fine. I just wanted to drop this note so others know that a moderator has seen it.
Again, welcome.

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This question was solved.
View Solution.

I will keep an eye out for your response.
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