Personally, I prefer running HP Ice instead of HP fire. All you do is sacrifice hitting escavalier to 2hko druddigon (and all other dragon types for that matter) and nidoqueen which is a pretty big feat for an electric type.
This is the set I've been using:
Rotom-Mow @ Expert Belt
EVs: 252 SAtk / 252 Spd / 4 SDef
- Volt Switch
- Leaf Storm
- Hidden Power (Ice)
This set functions similarly to the choiced sets, but is more flexible and can net you a few surprise kills. It's basically the equivalent of e-belt manetric, but on rotom-c. Pretty simple really.
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