I sell drip systems, so take this with that in mind — but these are the three things buyers regret not checking. 1. Emitter spacing must match your crop, not the dealer stock in the shop. Wrong spacing wastes water for the whole life of the system. 2. Ask for the ISI mark on the lateral pipe. Unmarked pipe cracks in two summers. 3. Find out who services it and how far away they are. A system nobody can repair is scrap. Also check your subsidy paperwork before ordering. Under PMKSY the sanction has to come before purchase in most states, not after.