Have you tried a Speedy? 🙂
I’ve owned several – they’re beautifully made, and on a perfectly smooth open road they’re a blast to ride. But they’re also very twitchy, have no suspension, are basically bui8lt to size, and don’t do luggage or other stuff very well. They’re race trikes, and very good for racing, but not for other stuff, and I found them too delicate for normal road use. They also have lots of specialist parts on them.
The Scorpions are touring trikes, really – more relaxed steering, can carry luggage, can have very good mudguards, can fold up, can be full suspension, can have normal brakes and gears, and don’t mind hitting potholes.
It’s the difference between a time-trial road bike and a MTB, really. Neither is “better” as such…