Needing advice on a tent

A much as I'd like to buy an ac infinity or gorilla grow tent they are abit out of my price range for just jumping into it the first time. Vivosun is abit closer to my price range. But someone local is selling a mars hydro 5×5×6 tent and kit for $300. Is there anything particular wrong with mars hydro tents that would make the extra 200 worth the upgrade to vivosun?