Ok.
I've been researching every single piece of vaporizers.

there are 2 for your choice.

Silver Surfer = $200

Super Vapezilla = $500

of course SVZ is better but if you can't afford, go for SS.
This is based on many many many people's reviews and my personal experience. SVZ FTW. It blows volcano away.

http://www.vapeguide.com/vaporizer-reviews.html

that should help you out.