Two questions: - for only 10 francs more, the "pro" model (Xiamo 2 Pro) promises *much* better/faster performance. Particularly when it comes to inflating car tyres. So why buy this model - because it's lighter and smaller? - What noise do these things make when in use? I got a standup paddle compressor, but never used it as it was 15min of loud noise (neighbours, holidaymakers...)!!!!