I currently use two external hdd's (1,5 TB and 1 TB) with my PC (don't have my mac yet), which are both formatted to NTFS. My mac won't support NTFS natively and I found out that the applications that let it support NTFS aren't perfect. Since I'm using one of my hdd's for time machine, I don't think that NTFS is a smart move. Sadly my 1,5 TB is full at the moment, mostly with movies. The other is 40% full. I am unable of emptying either of them properly. So this caught my attention: Seagate's GOFLEX 1 TB external HDD Is this a good option, because of it's native ability to support mac and pc, while using NTFS? That includes usage of time machine as backup, on that particular drive. Or should I try and empty my 1 TB HDD (copy everything to my mac and back again), make a partition for OSX and use that? I'm a bit sceptical about this, because I know that switching between windows and OSX will be done frequently.