I haven't checked recently but last I looked Hinson charges a lot for a not great quality work. Simply put, wiring is not their strength. I'm not trying to be down as most of their mechanical parts are decent (turbo kit for one) but do you have to make sure they're in stock.
Pez's products are great. If you want the easiest possible install from someone on the scene, he's solid. We'll glady refer folks to Pez all day, he's a friend. My understanding is that he's getting pretty close to a plug and play setup. It's more expensive than our offering but it should be. I imagine you might end up with a bit more wiring than you needed to in order to make use of factory connectors, but it's easy. The only other downside is that Pez sometimes gets backordered (he'll always give you a reliable answer on that score though, unlike Hinson).
Our harness mods leave you splicing leads into the Mazda chassis (fuel pump, ac relays, power, ground etc...) it's about 7-8 wires to connect IIRC. It takes a little more effort than Pez's version but it's not hard. We take special requests so if you want a particular wrap or elimination of features you're not using we do that. Since you're local we might be able to help with the hook up process too (something we've wanted to better document for a while).
The last option is to rock a stand-alone harness... That's bad ass, but it's easy for costs to get very high very quickly. Hope that helps.