asthetically problem with mechs is that theres no telling when the battery gets to around 3.7 3.6 volts. Not the biggest problem if you can guesstimate it. But, if your budget is around 130-150 dont go spend it all on a device by itself unless you really want too. It's really up to you, you could just get a SVD from Innokin which i use. it's a great mod, very well built and has all the bells and whistles you need. Then on the plus side, you can get other accessories that you need, new tank, batteries, charger,juice etc. Heck you could even get a wrap for your vape from Jwraps. Like the SVD, telescoping is nice so you can adjust to the size battery you like an what have you without having to use different tubes all together. Look around and find one that pleases you looks wise and functions the way you want it too. No use on bashing other devices they all vape the way we want too. Sometimes, it just comes down to the quality and design