I'm often finding that my flexible tube routing components appear to lack a "natural" look. Instead of smooth flowing 3D paths, they appear more abrupt and poorly directed.

Are there any good tricks or methods that you guys use to get your 3D tubing paths to flow in a more natural way. Tangent relationships to connection points still look like crap and take forever to get semi-realistic.

Number of control points, min radii etc all have an effect I'm sure, but I just can't get these things to look right. Hardly a show stopper as far as production concerned, but would be interested in hearing ideas anyway.