I use my VC4 all the time unless I'm back to using the reuleaux RX200S. The Efest Luc 4 is the only charger I own that will do up to 4 18650's at 1A charge rate. For all other mods it's the Xtar VC4.
What I like most about the VC4 is the information the display provides. You get actual voltage readings, a graphical dial display of charger progress, and MAH readings. Tha MAH readings are only meaningful if charging starts a lower voltages (full discharge to full charge), but it's good information that lets you know when a battery is beginning to lose capacity if you pay attention to average readings.