We're a small civil engineering firm looking to replace our HP 1055cm plus. Does anyone have user reviews / opinions on any of the following: HP DesignJet T795, HP DesignJet T1300ps, Canon imagePROGRAF iPF785, or Canon imagePROGRAF iPF830? We mainly print 24"x36" black line construction drawings, but occasionally do 30"x42" and/or color. We'd prefer a workhorse that will last vs. something with all the bells and whistles. Thanks!