This may not be a good analogy, but I compare the analog looking PV as the user-friendly solution (think iOS) and everything else as the developer/prosumer friendly ones (Android). There's always a tradeoff, and you can't have both. The analog looking PV (I started with Blu-cig personally) is the easier to start with (throw on cartos, throw away after a single use, bring batteries + PCC etc.), but you'll hit its limits in terms of capabilities fast, AND it'll cost a TON to keep up. Even a simple eGo style battery will have a longer battery life (2-3times longer easy even with 650 mAh battery), myriad of attachments to play with/choose from, customization that's only limited by your imagination, and the price range that varies from cheap (compared to analog lookalikes) to obscene.
Bottom line is, we're doing this to get off the cancer sticks. Get whatever works for you and stick with it
