myvi feels more expensive in and out (more proportionate and better looking design)

stable enough for usual highway cruising too (even though 4 speed but 110kmh is around 2k+ rpm only)

saga on the other hand, the design and build quality is really bad compared to myvi (especially obvious when you compare the door card/ dashboard/ meter)

however saga feels a little more stable and offers bigger space, while being cheaper also

if you decided to go for myvi, go for the 1.5H spec. offers the best value imo and i will take 1.5 over 1.3 anyday.

if you decided to go for saga, just avoid the base spec due to how little active safety features it offers.

no comments on bezza because i would pick myvi over it anyday (bezza super underpowered and looks awful).

btw, since you are considering myvi, why not consider latest Persona FL too? similar price point and quite a big step-up from saga.