My SP101 rides in a Don Hume 715TB IWB holster. I'm sure it isn't 'the best' either, but it is plenty good for me. It has a steel belt clip, and single thickness molded leather. It fits the gun perfectly making the reholster easy. I chose the model with the thumbsnap because I often ride horseback/atv/jeep and don't want any surprises.
Of the two things I really like about this holster, one was the value. the other is the ease of reholster and resnapping the thumbsnap. I have had holsters that took two hands to get the gun holstered. Not the case with this one.