I can tell you my opinion and experience with Malev. I have flown
with Malev several times on Tu154 and B737. They do not use
the Tupolevs anymore (at least not for pax). I was always
satisfied with their service, the plane was always clean and
seemed well maitained. My opinion about their service is that
they meet with the standards but nothing extraordinary.
I do not like their business strategy, however, I do not remember
any single case when they offered the best deal. There was
always a cheaper fare to be found.
So, if you decide to fly with them you will get decent service
(the food was especially good), but if you are concerned about
you pocket it is better to keep looking for other choices.