I have a pair of sneakers that I love. They fit great, they're comfortable, and they look good. If I wanted to only own one pair of shoes, these would be the ones and they would take me wherever I want to go. But even though these sneakers get the job done, I like having a pair of boots for rain and snow and some high heels to wear with dresses and flip-flops for the beach. In fact, I have several pairs of boots because I like to change them up depending on my mood and the situation.
That's how I look at PVs. I could vape pretty happily if I only owned a good supply of twists. I really could. But when I can afford it, I like to indulge in other PVs that fit certain moods and situations better than a twist. I like my Provari when I'm sitting on the couch at home watching a movie or TV. I have e-Rolls and 450mah e-Go C's that I absolutely love when I need something I can stick in my pocket and use between meetings. I also love those when I'm at my computer writing, which is most of the day, because they are light and I can type while still holding one. I also like the e-Roll for trying out new flavors since the tank is small. And for the rest of the time, I use my twists with a stardust on them. The twists are my sneakers--dependable, comfortable, and my go-to choice. But for me, it's nice to have a kickin' pair of boots to slip on when I feel like it.
It really is all personal preference.