This is the least expensive heavy hitter that I am aware of. It's actually quite good with a lifetime warranty - very similar to the Vapor Brothers:
http://www.ebay.com/itm/VaporBox-Va...858?pt=LH_DefaultDomain_0&hash=item519a3d4602
I see that the price has been increased by about $30 but there's a "make an offer" which suggests that it could still be had for the original $139.00, which is what I had paid for it. It's a little higher than what you want to spend but the quality and performance is definitely there, plus if it breaks the company will fix it indefinitely, no questions asked, which has been my experience.
My friends say that my VaporBox "hits like a motherfucker," it's hands free, there's very little learning curve involved. The only thing I would say regarding this or any other "box vape" is that you might like to raise the back end up slightly to even out the angle (you'll know what I mean if you pick this vape). A paperback book is fine. I have a mousepad with wrist support, and that works perfectly - the wrist support raises it up and the mousepad allows the vaporizer to retain it's stability on the table.
Regardless of what vape you pick, you should get a grinder - this is very important.
A cheap two piece is ideal. My favorite is the small Space Case which is about $20 or so with a coupon code but good ones can be found on Ebay for less.
Best results with a vaporizer: First dry out a bud by leaving it in the open air overnight. Then grind it. When you're ready to use it, do not pack it - just put a little in. Stir the bud particles between hits with a "pokey stick" or a toothpick or a bamboo skewer. I've used a stretched out paper clip - works fine too.
Let us know what you decide on and how you like it.. good luck.