best value trackers....advice please

[huggies]

Sadly ever climbing values have led me to think I maybe need to fit a tracker system to my 996TT
As usual the techy bits end up leaving me confused and frustrated
So what is the best price/effectiveness type to go for and which is best value

Some seem very expensive especially if I keep the car for the next ten years which is likely but are the cheaper ones worth a dime? The car is in a very secure garage when not used.

Are any out there likely/known to also to create glitches with the cars systems

thanks in advance folks