Hi, I own an A2B Metro and I'm 6'2" tall and the seat can be raised so I'm sure that any one who is 6'4" could ride and peddle one in comfort.
The bike is not cheap specially by the time I brought the extra battery and all the things to go with it. I've had my bike since June and have only seen one other on the road at a distance. So, there are probably are not many around yet.
As for the pedelectric side of it I would say the bike excels in this mode quite simply because if you want to go fast peddle more and I love going fast and if I get tired the bike can take over (it rarely happens).
I have to disagree with one of the posters here - the bike is certainly great for longer rides mine is set up with both the external and the internal batteries, rear panniers (from Ultra Motor) and a bag on top of the rack as well. I also have the new updated shock that is elastomer packed it's a black unit that is fully enclosed by a plastic and rubber housing covering the spring. I weigh about 77 kgs and with the panniers loaded there can be between 90 and 100 kgs on the bike (occasionally 110kgs). The load distribution is always somewhere around 40kgs on the front forks with the rest sitting on the rear. This sounds heavy but with the updated shock the bike rides well. The ride is smooth and controlled at any speed - my top speed reach so far going down a steep hill is just over 38 miles an hour the bike handled very well and the brakes are great though they do need to be keep correctly adjusted.
Note - I don't use my bike on dirt roads or tracks the tyres are NOT suitable as they are very slick (watch out for dry loose sand and gravel on paved roads!!!) in my opinion, the bike is in reality not meant for off road/dirt road use - different tyres may alter my opinion on this later.
I have have found that with the two batteries fitted and the panniers the bike is ideal for everyday use and and for longer rides on the weekends. The bike and its battery, motor combination give plenty of power when not peddling but I always use the peddles as I love riding and for me a side benefit is this gives me extended range for my longer rides. I've have done just under 50 miles on both batteries being fully charged and the orange light was still on (three lights indicating charge (Green full, orange half full, and red you're on your last third of battery).
I do think for the price a speedo, lights and better power/charge/power use indicator would have been nice.
Before I brought the A2B metro I test rode a few other e-bikes. However, none of other bikes had the power, the speed, the comfort, the look and the "fun" factor that the A2B gave me.
The A2B is great for zipping around the city and into the village (I live in Wimbledon) but, more importantly for me the A2B is the ideal long range commuter or "country cruiser" lots of power, good speed and good range and heaps of fun.
One last thing it's cool! It looks great and I have not been out on the bike once with out another cyclist stopping me on the road to ask about it! Comments from the younger generations - "its sick man totally sick".