I applaud the Pila Chargers, but yes, you will need spacers. (I can't say anything against this decision)
I use the XTAR WP6 II 6 bay charger and also use 4 XTAR Spacers per battery and get very good "off the charger" voltage tests of 4.2-4.21V
I have a XTAR MP2 and it's a 2-bay 18350 mini-charger that I love because it's a usb charger, very small, requires no spacers, and it comes with USB/wall-plug and a 12V car charger, but there is some variability to them with regards to final charge voltage. RTDVapor is swapping me for a new one that he has tested that will cap the voltage to 4.20-4.22V because the original one I have seems to want to charge the AW
batteries to 4.26V (which will lesson overall battery life). Anything off the charger at 4.25V or higher for AW IMR 700mah is not ideal for longevity on these cells according to the OEM.
If you get an MP2, make sure to test the voltage off the battery to ensure you got a charger closer to 4.2-4.22V on a multimeter, or understand that your
batteries might not last as long.