Adding my $0.02. I'm probably quite biased, since I have about 500 jumps on a Phantom 2 and a Shadow 2. I flew a Funk twice, the original Havok a few times, and now the Havok Carve a few times. Although the Funk's shape is obviously based on the Havok, there are a number of significant design differences. Phoenix-Fly's design is focused on a close fit, which I felt translates into sharper movements in things like transitions, barrel rolls, and especially carving. Squirrel's version incorporates the punch through arm sleeve, with a trade-off of a looser fit in the body (because you raise your knees in order to punch your arms out) and a looser fit on the arms, with stretchy material. I was able to do transitions, backflying, and carving in both suits, but the Havok feels more like an extension of my body, rather than my body manipulating material around me. I'm used to flying a Shadow, which has the same hand loops as the Havok, compared to the thumb loops on the Funk. With the inflation zips undone in the Funk, it felt like a lot of fabric to move around, and with them done up, it felt like I was in an inflatable mattress. Mind you, the Funk that I flew with zips undone was big on me (although the guy I borrowed it from said it also felt big on him - same height, but he's heavier). The second Funk that I flew (with inflation zips done up) was built for a guy the same size as me. Both suits have impressive glide performance - I'm sure I could easily fly over 3 minutes in either (but I don't focus on performance). The first time I set up the Funk, I found the innie-outie zippers to be a fair bit more work, but the second time, I started to get used to it. Since I don't BASE jump (yet?), this feature isn't important to me. I did see another Funk where the cutaway handle was partially sucked into the suit while in a sitting position, and the guy said he just makes sure that his handles are ok before exiting. I didn't have that issue on my rig though. The Havok Carve has longer leg zippers than previous PF suits, which makes it far easier to get into. I can get into the Havok while standing up, with almost as much ease as just the rig by itself. The Funk is also easy to get into. Summary: Certainly, much of this comes down to personal preferences. For acro stuff (which is what I'm focused on), I definitely feel that the Havok performs better.
