Hi Wayne,
CVT box’es are ‘continuous variable transmission’ as averse to dual clutch variants and the most noticeable difference between the 2 are lag or delay.
Imagine you are at a roundabout in fairly heavy traffic and a gap appears and you think ‘i can get in that – just’. You put your foot down, the engine howls and you don’t move. After a second, the car jumps forward BUT that gap that was safe is now downgraded to buttock clenching.
Believe me, I have been there on more than one occasion. Never again.
The other auto box’es do not suffer from this anywhere near as bad.
Try a google search on….
Continuously Variable Transmission (CVT) …
Dual-Clutch Transmission (DCT) …
DSG (Direct Shift Gearbox) …
for a full technical breakdown.
Good luck with whatever you choose mate 🙂