I have never used a Juul due to cost. They do have very high nic concentration, and it is a proprietary blend of nic salts, so they tend to be liked over some different cigalikes.
With that said, you have plenty of room to raise your nicotine if you are concerned about chain vaping, and what a "non-cigalike" mod will give you is better battery life, more adjustable options (airflow, coil, etc) and most likely, more vapor per puff. If you like the idea of nic salts those can be purchased premade to put in the equipment you already have, and if you are worried about chain-vaping, you can raise your nicotine level and do so far less expensively than with a cigalike.
Also, if you are habitually a chain vaper, be cautious of doing so with the Juul due to the high nic content of the pods (not to mention cost) and nic salts tend to be more bioavailable more quickly, so it is NOT designed for chain-vaping, and you may find yourself doing so out of habit, and winding up a bit nic sick.
I really do think you have more and better options than moving to a Juul, but if you feel the device is for you then the limitations are 1) poor battery life 2) non-adjustable 3) expensive pods 4) possibility of too much nic all at once.
I'm not saying you have to do one or the other, just giving you what information I have about the Juul. If I could ONLY vape a cigalike, I would probably choose the Juul, but I a) don't want to hand tobacco makers money and b) would wind up very unhappy about the cost, especially since I DIY Nic salts already at 18 mg/ml, and I chain vape from time to time. I can also go hours without vaping if needed.
Good luck,
Anna