Good optician in South/Central area ?

So, now after some try-and-error I found one very good optician and 3 which I cannot recommend at all.
First, if you do not know your lens prescription data, you should always make an appointment for an eye test with a doctor. The tests carried out from the (consistently poorly educated) sales staff are good for nothing ...

MENRAD Eyewear in San Gwann is TOP.
The sales staff is competent, they have all quality levels of frames and also the lenses are of good quality.
It takes 3-5 days till the glasses are ready-

TANTI Opticians in Valletta was worst.
First the eye test was not done right, then the saleslady's handwritten data for the lenses were unclear for the technician, who - instead of checking back - made his own interpretation which resulted in wrong lenses (wrong strength and wrong cylinder). After the second attempt I got progressive (!!!) lenses with wrong pupils distance ...
Both times the glasses were handed over to me with very dirty lenses full of fingerprints and it lasted always almost 2 weeks.