In my opinion the best one is the two volume Oxford, PWN, Polish- English dictionary,
Yes. The best and the biggest one. My uni mate was a co-writer of it - I always admired his intelligence - during boring lectures we did crosswords and he was able to finish a complex Jolka crossword within an hour. Amazing. Later he went into translations while I into teaching.
So, his dictionary must be top level.
The problem is that today people prefer to use phone dictionaries or google.
PS> Jolka is a crossword in which the clues are given in a random order-i.e. there are no numbers to tell the solver which clue corresponds to which squares on the grid.