Not into Korean cars.
Ioniq? Never heard of it.
It is a hybrid?
Even hybrids from Toyota and Honda have terrible RV, I think a Hyundai hybrid would be as good as free for second hand buyers.
I'd say of the 3 the Prius is the best car.
Prius C and Insight isn't really worth it.

just want to point out that.... that takara airbag thing isnt a 'honda' only thing... its affecting many vehicles from that period. If this is an issue to you, best stay away from any of the vehicles listed in the recall (again, not a honda only thing)

the ioniq is quite a new car, you will have to be a willing white rat if you want to get one. Remember this, early batches of a model usually do have their share of flaws which may not be known at launch but appear over time. As they roll out the more cars they will usually make small adjustments to iron out all the kinks. so if you want to be an early adopter, well its a risk you have to take.

*in my opinion
benefits of hybrids:
i)can claim to be one earth loving human
ii)fuel economy
issues
i)resale. you might not care about this, but for someone who does not cover as much distance, the amount it depreciates can be much more than what you have saved on petrol
ii)maintanance in the near future will NEVER be cheap compared to a petrol going model (less parts, less issues, simple)

**another point to note is... dry dct tranny.... well on one hand, look at vw and their tranny's, one time rosak habis... on the other hand, korean have been using dct's fir a while, and i dont hear any 'major' issues with them. (ofc cost of maintaining it would be pretty high compared to a conventional tranny)

haha cps is more complicated, more expensive to make and if you have a heavy foot it can drink a crapload of fuel (same idea as 'real' vtecs and mivecs, able to run a diferent set of cams)
btw the cps is still used now fyi, the exora is still sold with the cps so its production is still ongoing.
The persona is a more modern car haha thats why its nicer

Gen 2/persona, now these 2 share alooot of parts. almost the same thing but one has a larger arse. I still like the gen 2 cps, comes with all the goodies the persona has but with a better engine and smaller boot. They did fix some flaws with the gen2 on the persona but.... i suspect some fixed didnt pan out that well...

Waja.... yeah some variants came with their issues, power window related stuff, door handles snapping off... and the very sad renault engine... But the late batch cars were decent. Last batches came fully loaded and were basically as reliable as any other proton out there.

Savvy.... on paper, a decent town car! stable with wheels at basically the 4 edges of the car, fuel sipping with that renault engine (it really was frugal if driven that way), amt geabox which was a fancy feature. However it was not to be, the fancy gearbox gives way and costs more tha the car to replace, the impressive engine has soooo many sensors that need to be maintained (by renault, proton cant fix em properly), crap happens when modified, and the looks.... well some liked it, others found it absolutely disgusting. all in all? a potential money pit.