... au contraire...ImageX answered the OP's question appropriately but was attacked for being bluntly honest. You get what you pay for...all those $10-$20 tanks are a very mediocre devise/vape on their best day regardless how you rebuild them. Riding in a log truck beats walking but in no way compares to riding in a Mercedes...
I'll remember that next time I see my neighbor waiting for AAA to come tow his Maybach.