I'm using the sh/ff code at .8 and 1.05 respectively, with downwards gravity at 1.15 and it feels great. SH could be a bit bigger I think but the only negative effect I've seen is snake can't get his full nair out with them this height (but could he ever get a full nair with sh? I have no idea). Haven't tested Gannon yet, but everyone else can perform all their aerials and it seems to help.
Still, I intended to start testing off with .9 sh and I'm not sure why I didn't do that in the first place, so in a bit I'll test that.
I could upload videos but right now my roommate isn't home so it would just be me vs. cpu. If you're interested I could still do it, but it probably shows off how relatively bad I am...