I have gotten an oil pipe to work well....reaching hyperspace with less than 20mg many times using this method.
Of course the GVG is better but if you are on a budget there are few alternatives for someone looking to vaporize....
there are just a few things you have to keep in mind.
you cannot overload the pipe...usually you can only fit about 25-30mg max unless you have a really big bulb on your oil burner...
You have to use either a paper matches or a torch no regular lighter works right...the heat distribution and temperature are all wrong on a bic type lighter for use with this kind of device..
If you use matches take steps so you don't burn yourself or your house down...I just don't like torch lighters because I don't like the idea of inhaling butane with my spice.
Of course the smell of sulphur from matches isn't the best smell either...
Also... One must keep the pipe as clean as possible using a q-tip and distilled water or an ever clear type substance....and also you must frequently replace overly oxidized pipes...
Also don't buy an oil burner where the glass on the bulb part is super thick...the bulb part should be thin.
I have found the oil burner method to be more spice conserving as opposed to smoking it with weed and what not,or the machine.....of course that is just my viewpoint..
Oh and by the way....for educational purposes only I would inform you that actually a "oil burner" pipe is used most commonly by meth addict where as "the machine" is more like a crack pipe....
and this is the reason I dislike buying oil burners from the head shop becase they always give you this look>>>>>>>
But they do cost less than a burger king whopper.
And why do you look at the speck in your brother's eye, but do not percieve the plank in your own eye? Or how can you say to your brother, "brother let me remove the speck from your eye", when you yourself do not see the plank that is in your own eye?-Yeshua ben Yoseph