One of the FD rescues near my station was testing out the Ferno INX.....all I really know is they hated it. We are just beginning to phase in the Stryker Power Lift gurneys, and our new ambulances have the Power Load system as well. Because they are still new and being phased in I've only gotten to use those a couple of times but I can (if stating the obvious) say Power Lift +Load > Power Lift without the Load system, and that's > than a non powered standard Stryker X frame which is otherwise our standard gurney.
I also maintain that the Ferno ProFlexx 28Z > Stryker X frame. Like I said, my previous dept used them exclusively so I used it for 1 1/2 years before going to my current service with Stryker X frames. Never once when I was using the Ferno did I wish I had a Stryker.... almost daily using the Stryker I wish I had the Ferno. Even though it's a manual gurney, you almost never had to lift and carry a patient, vs the Stryker is too big, too bulky to fit into most people's residences where I work, we almost invariably have to leave it out on the front porch every call, then hope the patient is ambulatory because otherwise we have to lift and carry them to the gurney (then lift the combined weight of patient+gurney to load height, then lift that into the ambulance, then support that weight unloading, then lowering the gurney at the hospital). With the Ferno, because it collapses into the chair mode and is lighter, we were almost always able to get it inside and to the patient (or at least significantly closer), and once you got the patient into the gurney, there's virtually no lifting. Just bring the legs back up to gurney mode, push it into the ambulance as the legs simply fold up under it, and simple pull back out at the hospital, the legs simply unfold and unlock automatically.
Even though it's lighter, and looks less "beefy" than the the Stryker, I've never once had a failure of the Ferno. Granted I've never had a failure of a Stryker itself either, I HAVE had failures of the Stryker's locking mechanism in the ambulance. Both where the mechanism came unmatched in transit, and where it becomes stiff and you have to either put more force on the little ball detent to get it to snap shut (thus jostling your patient around) or sticking your hand into the mechanism to release it manually...