You can still backup your apps, contacts, call/text logs.
I like Titanium Pro for backing up apps/data.
I like MyBackup Pro for backing up contacts, call/text logs.
Both these programs have free versions.
If you're rooted, you can also backup system files, not something you need now, but come in handy if you decide you need to de-bloat.
At the minimum, I'd get a file-based backup with those two apps and do the appbrain thing.