Hi all, trying to decide on a printer for home use. Needs to be insta ink compatible so looking at HP. Mainly for 3 sons for high school work and also print pictures as so many photos I want to print off. Needs to cost less than £80. looked at HP ENVY'S. Am I right that if there is a hp 5032 and a 6032 then the latter is a newer version and so on and so forth? So many options...6010, 6020, 6430,6234....so difficult to know which to go for.Help please