I would spend a few dollars more for a more reliable vaporizer with increased durability, improved signal, awesome chip and a bit more headroom: the ipv mini for $55. The other suggestion would be the sigelei mini 30w that's just being released right now.
In summary, $20 extra will buy you a world of improvement.
I too would recommend the nautilus or nautilus mini, although I believe the atlantis would fire on the ipv mini.