We have look past our noses here. Can one add features to a Harris as easily as a Motorola? Is the RPM software, or FW as easy to find as APX CPS 30, or FW 30 which can already be found online? That’s why Moto radios are more expensive, because it doesn’t matter what’s in them when purchased. Plenty of E-Bay sellers more than happy to add a dozen features for $50. With Harris, what you get is what it is. Unless one is connected to God, that used Harris Phase 1 radio will cost a fortune to upgrade to Phase 2.
It's not hard to get a feature string upgrade for a Harris at 100 bucks (if you know where to go). FW upgrades can be done through RPM. Getting the FW can be found online for free, same with RPM. You just have to know where to look.
As far as difference between the two radios, I own both XG 100P and APX 7K. As others have said, the Harris is way much easier to program onto a trunked system for monitoring without risking affiliation. Takes about 3 steps in RPM. Also there is no need for hex editing or sys key software. The radio will just monitor and not mess with the system. System admins generally dont mind a Harris monitoring the system.
The cons on the XG100P are it is a brick. Just like the XTS. Parts can be hard to come by but can be found. It is not as rugged as the APX from what I can tell. If you take care of it, they will last.
The APX line has a much smaller profile then the Harris. Build quality seems better and parts are all over the place. FW and CPS is easy to get through Motorola or other sources.
Cons with the APX. Programing the APX for NAS is very time consuming and has to be done correctly. You will also need to hex edit or syskey generator to make sys keys to program in the system. Very touchy subject with a lot of people to include Motorola and sys admins. The APX if programed correctly can still try to affiliate with the system. Sys admins are not keen on APX NAS on their systems because of the risk.
The other two big cons are the price and hacked APX out there. Finding a legit and cheap APX is rough. You have to really watch.
IMO the Harris is worth the cost vs the Motorola. Some guys have upgraded to the latest XL series and love them. Some guys stick with the XG. You can find XG NOS from a seller on Ebay for 1400. (radio only). I paid 1500 for mine, radio,battery,antenna and charger were all NOS never before used. Well worth the price and no need for FW or feature string upgrades. So I dont have to mess with that, it has all I need.