Welcome. Well, there's opinions either way on the value of 300tdis versus td5s. The 300tdi is simpler and has fewer electronics and the td5 is a bit more powerful, has a more tunable engine and more electronics, conveniently located under the driver's seat so as to get them wet during wading or even heavy showers. A TD5 night be better if you do more long distances on motorways and A roads as it's a bit more civilised at speed. If you spend a lot of time in the mud a 300 might be your best bet.