You can get a decent vape out of mxv4 but it's not a good atty for just starting out, it kind of combines all the little intricacies into one big cluster of an RDA if your not experienced and will lead to some frustration and on top of that it's like a jack of all trades master of none type of atty. You'd be better off with an MXV3 to start if your stuck on that atty. No matter what you buy, you're going to end up buying more later, wether you're telling yourself you won't or not you will. So don't stress over it too much, it's all a learning experience, we've all bought atty's we ended up regretting, its just a part of the process and there's always someone waiting to buy your old attys in the classifieds if you put forth the effort to sell them (i'm way too lazy lol) but until you buy them and experiment with them yourself you'll never find the atty that's perfect for you because everyone is different, in the end the only person that can tell you what atty is best for you is you and the only way to figure that out is through experience. So buy whatever you think looks the best, build on it, learn how to get the best vape you can out of it then make your next decision based on what you've just learned. Don't sweat the details just yet. Good luck man!