I have a SP-01 (base) and love it. For flexibility purposes, I tend to prefer guns with rails.
It also came with tritium night sights, even though I thought that they were not standard with the base model.
I've seen a few SP-01 Tacticals on Armslist recently, for $475-$525. If you prefer a decocker over a safety, that's a good deal.
I bought mine new for $600.