I have the t-max developer which is designed to work perfectly with the t-max film from kodak that I've been using. Here's my question, do you have to match developer and film to some extent? For example, if I buy Ilford film would the t-max developer still work well? I saw a chart that matches developer to film in terms of time but didn't specify temperature which from the directions seems to be a critical factor in determining time...ie. if it's 75 degrees it will need less time than if it's 68 degrees (F). Has anyone used the Arista films that Freestyle sells? They're very economical but I have no idea what they're quality is vs. an Ilford or Kodak film. Thanks!