Two things first, what scale and what is your budget? I'm assuming it's 1/35 (the nominal best scale for armour), and you want the best for your money. If that the case, I would go MENG models all day long for a Mark V (and any of their other kits). Other manufacturers do mark IV's and Tamiya is the best there. Other wise, you will probably be looking at the old Emhar kits (not sure on the prices compared to others). I'd shop around, i got my Meng MK V a couple of years ago for around £40. Takom are good kits but they always seem to be at the high end of the price range and rarely discounted. Also, if there are any big model shows near you throughout the year, certain traders have good prices compared to online (with P&P). At shows, I usually get good deals with modelsforsale.