I've reviewed both, and chose to stay with Wiz because my examiners use the product. In about 22 seconds I can pull a set of reports that show me EXACTLY where I stand in the eyes of a CRA examiner. My demographics are there, market share, peer market shares etc. I'd pay millions for this report alone. (It's only a couple of hundred bucks as an add on to the program).

As to data entry. In all programs you're going to have some data entry. Geocoding is the primary area for this. I can't speak for Don's product, but hit rates for Centrax and PCI Wiz run about 70 to 75% with the appropriate filters on a geocoder. If you're running at 100%...your filter isn't being used as it should be.
I found centrax and wiz to be fairly similar so it came down to costs, costs to change, and viewing my world in the same way as my examiners see it. Also, I really like my rep (Carl Gern if you're looking for someone at PCI). The previous rep was why I started shopping around for a new program...so you shouldn't underestimate the value of their client services. You'll talk to these folks more than anyone else when converting your data, and in running the programs.
I'd schedule time to talk to Don Narup, Someone at PCI and someone at Centrax. Discuss your desires for the program, and get a feel for what they can do for you, and go from there.
On PCI and Centrax...major negative is that they both tend to release programs before their time. We do spend some time questioning the data, and often it's computer glitches in a newly released issue that cause the problems. It seems to be an industry issue...gad knows why!