I'm in the market for a new MBP and was considering Booq bags. I have a previous 15" MBP with a Crumpler Considerable Embarrassment bag and suffice it to say, I'm not that impressed. I've placed the bag down on the floor hard a couple times and I'm not exceptionally confident it can take a larger bump. No problems as of yet mainly because I'm careful with my gear. Regardless, here is what I'm looking at: Vyper M3: I read in another thread (http://forums.macrumors.com/showthread.php?t=974443&highlight=booq) that the Vyper M3 was not compatible with the unibody MBP's. Anyone encounter the same problems? --> anyone have any other recommendations for similar "hard cases". I hate Speck cases because I don't want a case on the laptop while it's working. I want the MBP to vent out heat as much as possible rather than trying to melt plastic. I'm just looking for a nice, simple, fairly lightweight "hard case" similar to this one. Mamba Shift: The backpack doesn't look too bad. Has anyone every used the Vyper M3 AND the Mamba Shift for dual protection? FYI,youtube has a pretty good video of what goes in (http://www.youtube.com/watch?v=0kwCgMhRZjU) Venom Pulse: Does this fit the IPhone 4? There is no info on the website and it looks a bit on the small side and minimal info on the web. Also, how does this clip onto your belt? I don't see a belt clip anywhere. Thanks all.