As of today, there are plenty of features missing on the 6200 compared to 2930F. Depends on what you need.
Some examples:
- Can't use secondary downloadable roles on 6200; only static roles at the controller
- IP client tracking does not exist on 6200
- Device fingerprinting (and forwarding to ClearPass) does not exist on 6200
- CDP receive does not support all version; no CDP send
I also saw some critical and not so critical bugs. Like loops, ghost error counters, stack members stuck on boot, dhcp snooping not working, NetEdit failing validations, NetEdit not completing firmware update...
Fortunately they will be used for a refresh and not a new installation. Otherwise, I would not have a network.
If I needed something to work today, and work well, I would go with 2930F.