When we started out, the only real (not 1/2A) handle we had was the BIG EZ Just. At the time I never knew there was anything wrong with it, and up until I started learning to fly the pattern it was still ok. About that time another flyer suggested I borrow his handle with narrower line spacing, it made the planes easier to fly and fit my hand better.
What I'd recommend is something small and light enough to be comfortable, since that's what important. It'd also be good if it were easy to adjust (for neutral) and durable. A small cable handle should be fine, and if more precision is acceptable at the trade off of not being as easily adjustable, a hard point handle would be fine. I'd avoid anything big, heavy, with 5" line spacing, or a million adjustable features.