travel crate

I have a 5 year old red nosed pit bull named Sam. I took him in about 3 years ago as a rescue. I currently live in NY and for career purposes I need to relocate to Mexico City for 2 years, starting this coming August. I had been assuming I would just bring Sam with me, but now that I'm looking...

I am going to get a new crate for my mixed breed dog (50 lbs). We don't use a crate in the car right now, but I can't decide if I should get a travel crate or just get one for use at home - what do you use your dog crate for most often? Which type do you prefer? Thanks!