I use a Remington XR1400 on my head(and a safety razor on my face. IDK why, but my face gets irritated whenever I use any electric razor on it.). It's a nice midpoint between "Absurdly expensive Pittbull thing", and "Reliable won't-breakness".

It's also a small, easy-to-hold headshaver, just..less expensive than Pittbull, and more reliable/better build quality than the Chinese ones.

https://www.amazon.com/gp/product/B01N74PTHF/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1