Before you buy any of them Jack check on here first as some vendors are better than others
we have a few personal choices here but post who you want to buy from and maybe someone here has had good or bad dealings and can point you in the right direction
Some vendors descriptions are very vague and you can never tell what exactly it is
Welcome Jack, the starter tank for me was the Tiger. In the end I have spent enough to almost have a Tamiya but the knowledge gained helped me to make better choices on my next 4-tanks. Do check out the vendors list as the recommended vendors have good prices and quality service. Saving a few pounds sometimes does not end well when the tank arrives untested and requiring work.
I just build the German tanks but one American tank I would like the Bulldog, good feedback on this tank and it is one of the bigger tanks in 1/16 scale. But if you want a kit Steve@welshdragon does have some kits on sell.