Worst Prerequisites

[Snowbluff]

Yes, Human Paragon and/or Factotum Dip/Able Learner get around skill reqs quite handily - but they also may not fit with your character concept, or cost you levels in another class that you really want or need.

Also, two of those options are Human only, so they can be a little restrictive.

Human is the opposite of restrictive. Whats wrong with skills and feats to meat trick prereqs? Unless you have a race restricted class, in which case you have more problems then you want to admit.

Human Paragon gives 2/3 casting progression, custom class skills, gives trailing class skills (Or is that Able Learner), ability points, and another feat. If you would have to do something much more obtuse to get into the class otherwise, this is the best option.

Medium BAB.

In other news, I might have Human Paragon memorized without ever using it.