I'm having to expand my kit. Traditionally I've found Rutland to be the best (high build quality and not overly complicated)... However they've been sold to a German company and the range that I used is no longer available.
I'm loathed to use Fane Valley or Geared reels, as find that they aren't robust, and are badly engineered, easily broken, so really not worth their asking price..
Looking at Kiwi Tech, it seems like an expensive introduction, but thereafter quite cheap to expand the system- and looks relatively foolproof?!
(we use a three wire system and multiple paddocks/daily moves- just in case)