My opinion is still the same as when I first saw it - well made with a good script & storyline but I found the aerial ballet sequences over-long & a tad boring. (A good chance to put the kettle on for a cuppa.) They went to a great deal of trouble & expense but being a tad over-critical, the Spanish-built versions of the Bf 109 & He 111 never looked quite right. Anyone watching the film without knowing the history would assume that the He 111 was the only German bomber involved.
It's still an excellent film for all that & well worth watching.

PS. Like all good films it's much more impressive on a big screen at the cinema. TV somehow doesn't do it justice.