The Del Monte deal comes at a great time. SodaStream's stock took a hit in its latest quarter on disappointing syrup sales. Flavor unit sales rose just 7% worldwide and actually declined by nearly 3% in the United States. This contrasts with the healthier 34% spike in carbonator refills and 27% in soda maker starter kits. SodaStream explained away part of the discrepancy on retailer stocking moves, but the market is still wondering why SodaStream's flavors aren't selling as briskly as CO2 canisters and the lower-margin appliance.