What in your opinion, or experience, is the best kind of axle to use for a teardrop. Would the best one be a spring axle, a spring axle with shock absorbers, or a torsion axle? Considerations I have in mind are the ride, cost, ability to get the hub to hub measurement you prefer, track width, and the ease of getting fenders that fit well. It seems a spring axle can have a narrower hub to hub distance than a torsion axle for the same size frame. This narrows the wheels track and may make it easier to use stock fenders...instead of wider, more costly, harder to find fenders. I'm a newbie looking for information to help choose the best kind of axle to use with a frame that will be custom built.
As always photos and your thoughts are encouraged and very much appreciated.