Acronis' Try & Decide -or- Returnil ... Which is better?

Acronis True Image Home 11
Windows XP Pro SP-3

I did a search on "returnil" before posting and was suprised to find no one had asked about a comparison between Returnil and the Try & Decide feature included in Acronis True Image (no hits on the search). These two seem to be equivalent to each other although I've read less about Try & Decide. Presumably both virtualize all hard disk writes. That is, all hard disk writes go to a virtual copy of the actual hard disk. All files changes (and that includes the registry) are written to the virtual hard disk. When you want to revert back to your prior state, you reboot, the virtual disk is discarded (Returnil lets you wipe the contents but that takes longer), and you're back to the prior state of your hard disk (because it was never touched). So far, they look to do the same thing.

Since I used Returnil before and have yet to bother with ATI's Try & Decide, and to eliminate wasted resources, I had disabled the ATI Try & Decide services. Although it would still be shown in the Acronis GUI, it wasn't running nor available. Obviously I could just reenable those services (set them to Automatic load mode). So I've already got Try & Decide installed on my host because it's bundled with ATI (and the installer doesn't give the user the choice to opt out of including it). However, that doesn't mean that I'd use it if Returnil was better.

So any opinions, experiences, or analytical comparison between these two products to know which one I should use? For active protection, I already use Avast (free) and WinPatrol. I used SRPs (software restriction policies) to make sure the web browser runs under a LUA (limited user account) token since I always logon under an admin-level account (too much that I do requires admin privileges). That's a path rule so I have a copy of the web browser's executable in another path for when I need it to run at admin privs, like when visiting the Windows Update site, Adobe Flash, or wherever I need to obtain and install known goodware. I may be replacing the SRP path rule to run the web browser under a Basic account (i.e., make it run under a LUA token) and instead go to BufferZone Pro (which is now free). GeSWall is dead. They sold off their Leakwall to BeyondTrust and that was their money maker, they never had have much revenue from the payware version of GeSWall, updates have been a year, or more apart, and I've used that in the past to know some problems and restrictions when using it. So I'd thought I'd try BufferZone Pro this time (since they went to freeware).

There are times when I know that I might be visiting a malicious site (or an unknown site) and I have a shortcut to the web browser which runs it in no add-ons mode and with scripting disabled. However, although I have VirtualPC 2007 to provide a virtual machine under which to test (and my eventually move to VirtualBox), that environment is sometimes too restrictive for hardware (e.g., no USB support, programs run way slower inside a VM) and I just want to test in my real host but be able to revert to a prior state if I decide the program under test is undesirable, malicous, or otherwise unwanted. I don't want to restore a partition image (I do a full image backup once per week and incremental images all the other days) from the Acronis Secure Zone to restore the state of my hard disk. The virtualized disk interception of Try & Decide or Returnil would be sufficient, quicker, and easier and give access to real hardware instead of emulating everything except the CPU inside a virtual machine.

So my environments would be:
- Real host + Avast + BufferZone
- Real host w/virtualized disk (Returnil or Try & Decide) + Avast + BufferZone
- Virtualized machine (no Avast, no BufferZone)

So I'm trying to figure out if I go with the Try & Decide already included in the Acronis True Image Home 11 installed on my host or go with Returnil.