OP - you had originally asked the question of choosing between a Vamo and a mechanical on a very tight budget. My recommendation to you would be to purchase a Vamo, they are a little over $30 at vaporbreak, if you can wait for the shipping from China. Fasttech has batteries for $5-10, a good nitecore charger for $15, and vivi novas for under $5. Again, you will need for wait for shipping from China, but shipping is free. I have ordered from both companies and it takes about 3 weeks. Like many others on the thread, I vape almost exclusively on gennies and mechanicals. The gennies give a great vape, but they wear out just like everything else. Insulators and orings wear our, threads get stripped, etc. I still have the original heads on my Vivi Novas I bought 9 months ago, and I used them exclusively for 5 months, rebuilding the wick and coils each week, though I had to replace one of the plastic tanks eaten away by a cola juice. Wire is cheap at Temco Industrial, under $10 for 100 feet that will last you a very long time. And I use cheesecloth or cotton yarn, Peaches N Cream from Walmart for $1.50, for my wick.
If mechanicals and rebuildables are where you want to go, the China GG and the Sigelei #8 are good, inexpensive mechs, around $35-40. The Igo-L dripper and the Aga-T's are good choices and will help you get the most out of your mechanical. There are plenty of places that sell them when they are in stock. For even cheaper, the Chinese DID clone I picked up from Fasttech for $9 is perfectly fine. You'll need to get mesh if you go the genny route, and the cheapest I've seen is Steam Monkey.
Hope this helps in finding your budget vape. Good luck!