Looking at taking advantage of the 0% finance currently on promotion in the UK. Got my eye on a 27" iMac tweaked to 3.5GHz Quad-core Intel Core i7, keeping RAM at 8GB (will do manual upgrade later) and graphics at base. Its just I cant decide on what HDD option to choose. Fusion or SSD (plus size of each!) Currently on the SSD side of the fence (either 256gb or 512gb) with a Thunderbolt external for "hefty" files, and day to day back up. Current iMac is a 1TB drive, with about half full (after all these years). I would look at moving my iTunes library to my NAS to save on internal space (but recently got hooked on Spotify premium so use that more then iTunes.) I make good use of everyday Apple apps, most intensive being iMovie, but when I have finished a Project i delete files from internal and move to external. As always, its a very mixed reaction reading through other posts regarding HDD's, i just wouldnt want to spend more then i actually need! Any suggestions?