I have a 4gb 2012 MacBook air that works fine. I don't face much performance related issues with it and can compile apps, use VMs(one at a time) fine with it. I

I have a 4gb 2012 MacBook air that works fine. I don't face much performance related issues with it and can compile apps, use VMs(one at a time) fine with it. It can get slightly laggy at times, but most of it isn't noticeable. I usually restart when that starts to happen and it gets fine that way. I am thinking of saving some money and upgrading to the base 1499 model and donating my air to a friend who really needs it. But it has got only 8GB of RAM. Ideally I would have gone for the 1799 model with 16gb ram which makes it $1999. But don't have that much money right now. However, since even the 4GBs of RAM have seemed satisfactory to me so far, I am thinking of making the jump. Non-apple is anyways not an option as I use sketch and need to compile iOS apps. With my present air I always regret getting 128GB hard disk as it is too less, and I need to format my laptop every year to get rid of the junk occupying hard disk space. I hope I don't end up regretting the 8GB for the next few years.