Plus 1 to what dspin said for sure. Only trouble I see though is getting the mouthpieces to work with them. The 510 extender I got is designed in a way that it wont accept a regular drip tip.
And just in case it hasn't been noticed yet, Bruce is offering a 15% off discount for Thursday and Friday since he will be headed to VaperCon in Virginia. The discount code is appropriately VAPERCON. If you're looking to pick up any parts, now would be a good time to order.
He also has a promo deal going on 3.0 ohm steel 510 atty's - Pack of 10 for $29.99 which would bring them down to $25.50 with the VAPERCON discount code.