Ron,
First, the feedback I can provide from direct experience:
--I tow a 2019 Cherokee Trailhawk. Super tow vehicle in my opinion. The 2019's are the first models that DO have the previous "death wobble" issue fixed internally--no need for the previous separately installed wiring harness to prevent the issue. I've got over 4000 miles of seamless towing on my rig so far--easy to pull and easy to handle--I'm very happy with it. (Do like Honda as well--previous owner of Accords and Civics--think the CRV would make a great tow).
--Since I had no previous RV towing experience (although I had previously towed trailers) I did extensive review and research on towing setups before I committed to one. My arrangement is Blue Ox baseplates, a Roadmaster Nighthawk towbar, and the SMI Stay-In-Play Duo brake system. I really like the Stay-In-Play Duo. I knew I wanted a permanently installed brake system, since I didn't want to have to move the brake system in and out of the tow vehicle and adjust it each time I hooked and unhooked the tow. The S-I-P provides a permanent, out of sight installation--you never know it's there, and to tow you just hook up the towbar and flip one switch in the Jeep. Has progressive and proportional braking--it applies the toad brakes at the same level you're applying the RV brakes. Requires two signals to activate the toad brakes--first the RV brake system must activate and then the accelerometer must sense deceleration--so eliminates inadvertent applications of the toad brakes. I have been highly satisfied with the effectiveness of the braking of my rig and how it performs.
I have no experience with the Roadmaster InvisiBrake. It is a permanently installed system like the Stay-In-Play and uses some of the same type components. From what I can gather from a quick look, two differences that seem to be in place are that it does not provide truly "proportional" braking (by use of an accelerometer), but instead when brakes are activated ramps up braking in steps to the maximum of a preset level (which you can adjust). Also, it apparently is activated simply by the same electrical signal that turns on the RV brake lights. There do seem to be some complaints online regarding inadvertent brake applications, but there are also a lot of positive comments. Maybe someone else on the forum has used that system and can provide first hand impressions.
I assume, between your two listed choices, the 2019 Trailhawk with a new tow install would demand a greater cash outlay than the used CRV with tow capability already present. That might be a pretty major factor in your decision. Also, the CRVs are very solid and popular units; I know they make great tows because I see a lot of them in use. However what I can say with no reservation is that I am delighted with my decision to go with the Trailhawk. I'll be the first to report any problems or shortfalls that surface, but based on the somewhat limited 4000 mile experience I've had so far, I can completely recommend the setup I'm using.
All the best, Mike