The main thing about all of those is that they detoggle all of your other powers when you activate them. On Live, Panther used to come with a stealth component, but it seems to have been removed.
If I remember, all of the flying ones were sufficient to cap your flight speed, so about the same as Fly. Not sure on the speed of the coyote and panther powers.
P.S. If you look under the Temporary Powers section at the bottom of the P2W vendor, you'll see some travel powers that won't detoggle you, though these are sold in 30 minute increments (stacks up to 10x?). (And of course, ninja and beast run don't detoggle.)