DS turns three in a couple of weeks. He's train obsessed and when I have asked him on a number of occasions what he wants for his birthday there is a very specific train set he keeps mentioning.
I could buy this for him but MIL has got a similar set (same make, so would be compatible to make bigger layouts etc) that used to belong to DH. She has been very excited about giving this to DS for his birthday.
DS would no doubt like MIL's train set very much but I know he would be utterly thrilled to get the specific set that he has been talking about. It would however steal the excitement from MIL.
So WIBU to buy the train set for DS?
(If it matters, MIL is a lovely woman who dotes on DS).