i'd go with a zap or purple days. i have a multitude of smoking instruments but i would say 90% of my usage now goes to the zap + bong combination. it's within your budget and most of its owners would agree it's one of the most efficient vaporizers on the market. i used to smoke alot and thought that vaporizers being efficient is just marketing (i thought even if it were true, it's likely to be because people smoke less, not because they actually get more out of vaping) but having used vapes exclusively for a couple weeks now, i can frankly say it's not true.

i used to hit one-hitter bowls, and each bowl was bigger than my zap's bowl. my standard practice is to pack one stem, hit one large hit through the bong and deposit the ABV into a jar. i sometimes, but rarely, hit the 2nd one because i've found that one hit vapor in fact gets me as high (or even higher) than one hit smoke.

so i figured - if vapor from one hit gets me as high as smoke from one hit of a bigger bowl, plus i can reuse vape remnants while i can't do that for smoke, so it only makes "cents" to keep vaping to a maximum and smoking to a minimum. i still smoke, but only occasionally when it is absolutely necessary to blow pass those temporary vaping thresholds (i think most of you know what i mean).