Bes, you have already asked several questions about vaporizers.
If you want to buy one, just go to any big box store (WalMart, Target, etcetera) and look at what they've got. Then pick one you like, pay for it and be done with it. You were already given links to sites with information about vaporizers; the information is not going to be any different just because you ask again.
You may want to search www.epinions.com to see if there is any information there about peoples' opinions of various vaporizers. If you want professional opinions as to what to get, I suggest you purchase a membership to www.consumerreports.org and review their recommendations.
