Personally, I haven't flown them but I have read reports that Sabena has greatly improved their service since SAir Group (the parent company of Swissair) purchased a substantial stake in the company. (The days of poor service earning Sabena the moniker 'Such A Bad Experience... Never Again!' appear to be long gone.)
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AlphaSigOU
Causa latet vis est notissima - the cause is hidden, the results are well-known.