Congrats on your new car, I am sure it is a peach.
Regarding chargers / conditioners, Ctek are as good most, but you are right, some people have reported issues, like them not being the IP rating they say and having some of the cheap components going pop.
I have the Maypole, which has been rock solid for me and probably has similar components. It operates differently to the Ctek. Instead of a float voltage, they operate on a pulsed charge, only switching on when the charge drops, which has some advantages over the float voltage from a Ctek if you aren’t in a temperature stable environment.
In the end you pay your money and take your choice, for either I wouldn’t leave it on all of the time for extended periods, as some people have seen issues.