Characteristics comparison lt manuals / data sheets of the manufacturers.:
Volume: INQUA BR02100 -> approximately 59 dBA PARI Boy SX -> approximately 56 dBA
Free air delivery (Jet Flow): INQUA BR02100 -> approximately 4 liters per minute PARI Boy SX -> approx 5.1 liters per minute
Operating pressure: INQUA BR02100 -> approx 1.1 bar PARI Boy SX -> 1.6 bar
Furthermore, the INQUA does not have as the unit of PARI an interval nebulization means breaker button. That is, here, the content is conveyed continuously - even if one is not inhaling. Thus, a certain portion of the inhalant is always given the same right back to the room air useless. And that's my opinion, but some waste ...
Conclusion: The INQUA inhaler is characterized in my opinion by its good price from - the PARI BOY SX is currently more expensive but a good stuff !! And no one is too great demands on the inhalation quality, then you can go wrong with this machine nothing.
As for me personally but my quality of life and health is more important than the price, but I will move to the inhaler of PARI. Although this (unfortunately) is much more expensive ...