I've decided to get on board with the new 2014 iMac. I'm debating on whether to go with a fusion drive (1tb would be fine for my needs) or to get the 256gb flash and then just get an external for storage. I'm guessing the difference between the two is many better on paper than real world usage? My needs are not cutting edge. Aside from the normal web/email/office usage, I use Lightroom and Photoshop. Those are my needs - about 25% admin and 75% photo. If going the 256gb flash route, would I be best off with external hdd's? I don't see the prices that low yet for the larger ssd's.