Electric fence chargers

My electric fence charger quit on me, it is 3yrs old and is under a warranty but I half to send it off for repair..  

 

I want a good reliable charger, high joules, etc.. 

 

Have used Zereba but haven't had long term success from them..

 

What have Y'all found to be a good long lasting high joule charger..  Don't want a "weed clipper" as I don't want to chance a fire...

 

Thanks

Chris

Electric fence chargers