Getrag 260 vs ZF Tranny

Hmm.... well currenty I'm running m stock e30 m3 transmission with my s50 swap and a 2.73 lsd. I like it except for my tanny mount that I custom made. Regardless, most people that I've seen do this swap on an E30 usually goes with the ZF instead of keeping their stock tranny. The reason I didn't go this route was because I heard of a common problem of mis-shifts with the ZF and I know the Getrag trannys are durable as hell (plus I'm staying NA and not ever going
FI so HP wouldn"t be an issue). My friend spoke w/Pete McHenry and he told my friend to stay with the Getrag.

I want to switch transmissions but am not sure if I should try and find a ZF or get a Getrag 260. What do you guys think?