My i7/16GB/512GB storage MBA is currently on its way but I didn't realise that you could upgrade the the lower spec i3 to i7. I started with the higher i5 spec, with the smallest storage size being 512GB. I'm upgrading from a 7 year old 11" MBA with 128GB storage, but it still has 30GB+ of storage as it was mainly used for web browsing. That said, I don't plan to change this MBA for at least 5 years, so should I keep the 512GB storage or return it and order the 256GB instead? Returning would be hassle but £180 for 256GB doesn't seem that worth it.