About to purchase a Volcano

I have a couple questions, first of all is the price. The cheapest I have found is $539.99 for either the easy or solid valve. Im leaning towards the solid valve because I have no need to fill up multiple balloons at one time. Also, what temperature have you guys found to work best for vaporizing? Finally, ive read that if you are vaporizing at the correct temperature, there should be a minimal smell, if anything at all, is this true? Im going to be using this in an apartment environment so id like to keep the smell down as much as possible. Answers to any of these questions would be appreciated, im looking to make a purchase sooner than later. Thanks!

1. im almost certain that you can fgind one cheaper than 539....(ebay, craigslist, local headshops)
2. solid valve, please
3. 5.5-6 on the dial
4. smell is very minimal and should not be an issue. If you were super paranoid you could vape by a window and be fine

something not mentioned in the post, get the classic volcano. Fuck the digi

Thanks for the quick response...im looking to buy a brand new one, I dont want to mess around and have it not work if I buy used. Im not too worried about the smell, we have been smoking blunts inside with no issue, i'm just buying the volcano to save my lungs and hopefully save some bud in the process. I plan on getting the classic, I see no need to spend a lot more money for a little more accurate temperature settings. Thanks!