I still think they're both great little clearomizers for an ego-sized device like my iTaste VV, but the mini protank-2 looks a little anemic on my SVD. The Aro is a little larger and the metal sleeve matches with the brushed finish on the SVD, but nevertheless I've moved on to the iClear i30 because the dual-coil design can handle the higher power available to the SVD (I can't really run the Smok or Kanger heads any higher than 8 watts before beginning to develop a burnt taste), but I'm really interested in the dual-coil Protank 3 because I really do favor bottom coil designs and the Protank is still a fantastic looking clearo.