I like both because from my work experience the advantage of work with other was if has a good team we can consultation together for solve various problem better than one person but disadvantage if has a not good team may be scrimmage within organization.
The advantage of work alone has privacy for work quite a lot however If a lot of work until unable responsible therefore nobody help to you or little help
From reason as above I can do both because I had both of these situations have been found.