I've been using hibernate with my old 40GB G2 for near 3 nears now, on two different laptops and never saw a hiccup yet. I don't use sleep mode because I hibernate the laptop, pull the drive out, and then put a completely different drive in. This is done at least once daily, on average I hibernate and swap drives twice a day, many days even more than that. Sleep mode being the low-power state that it is, won't work well with this so I've never used it extensively. I did try it though when I had non-critical data on the drives and while the Intel SSD didn't have an issue, the HDD was corrupted after a few pulls (WD Scorpio Black).
Not every SSD out there has an issue with sleep or hibernate. That said, the Intel G2 is one if not the most reliable SSD ever created outside of the Intel 510.
I'm surprised this 8MB bug is still in the wild, esp considering the 320 is based on the G2. Maybe there's an issue with all the (mostly needless) features they added to the 320.
Makes me feel even better than I already did about jumping on G2's when I did (near launch for each respective drive), as I've gotten constant use out of the 160GB G2 since 2009, same format, still amazing, best $550 I've ever spent.
If you do work on your laptop, a $100 USB3.0 external HDD is well worth the cost, run the backup weekly or daily, if it's everyday you're putting in 8+ hours of work. Or buy a cheap NAS storage, even if it's network adapter limited junk like most cheaper NAS drives, the backup over your network will be painless. Yeah, if you buy a backup solution now you won't have a crash for 100 years, but it's a requirement to do so.
I just can't recommend Intel drives over the Samsung stuff anymore.. as good of luck as I've had with mine, my love for that shiny new Samsung 830 is increasing on a daily basis. Can't tell people to go buy G2s
The market has really narrowed down to the everyman's drive with the 830 series and the 520 for those who need something different, a little faster and more exotic.