Congratulations to you both of making your 20th Anniversary. Well done!

As for your choice: I'd agree with those ahead of me - The Highland Granite is a beautiful tartan which can be worn formally or informally. The Saltire, on the other hand, whilst holding a slight attraction for me, is something of a 'novelty' tartan. I have seen it being worn and it is truly effective when those pleats are swinging, but I still see it as a 'fun' kilt and not one to be taken seriously.