MummaMia,

I had a Valco pram so when DD2 came along, I just got one of those chair thingy's you attach at the front of it. Being that your eldest will be almost 3 when bubs is born, I'm not sure you will get the use out of a twin/tandem pram. KWIM? You might find you have new bubs in there & nobody wanting to use the other side because they are a big girl now?

You could always look for one that is second-hand to save some $$ & it won't be wasted if you don't use it as much as you would have liked?