I have to agree with
@smiticans . I prefer a hard wired system over wireless. Wireless can be jammed however unlikely that may seem. Jamming equipment can be had from eBay so I don't think it'll be long before they get into common circulation. Sure, Ring and SimpliSafe can alert youthat the system is jammed but that's not really why you got a system in the first place.
I ran a security company for years and we used primarily Ademco/Honeywell equipment. Nothing beats a hardwired, supervised, system IMHO. I've never had to "tear out a wall" to get a system in, even with house built on slabs. Yes it is certainly more challenging and a lot more work, but it is reliable. The only "broken wires" I ever had to find were broken by squirrels getting into the attic. Cover every exterior opening, both doors and windows. Cover every interior door as well. Add in infrared, dual tech infrared and glass break where appropriate.
I'm also a fan of full blown fire detection. Smoke/ionization detectors in every room and "rate of rise" detectors in areas like the attic, laundry room and heating equipment areas. I don't think the wireless systems can even compare with fire detection which is even more critical than burglary detection.
I'm using a combination for monitoring the system. I'm using EnvisaLink as well as a monitoring service with IP and GSM. Backup power is a critical factor as well so make sure you've got more than enough capacity to handle the panel, sirens, motion detectors, remotes and communications gear. It can add up pretty quickly so be generous, batteries and charger for them are cheap enough. Another thing to install is LOUD sirens inside, as well as outside, to make it so uncomfortable inside that if anyone does get in they can't stay there due to the noise.