Well I have not personally had any experience with totally wicked other then the mini nova I got from my local shop. But, they appear to be like any other all in one stop that rebrands, which means a pretty good place to get your feet wet and see if you like vaping. I don't see any reason to worry about them as a company.
Unfortunately vaping is very subjective. I have V4L for basic starter supplies. They have tanks cartos a giant selection of battery styles and a giant list if flavores, also some of the best customer service you will find. I explore other shops and am going to buy myself a provari at my one year point and am always testing out new tank and clearomizer systems out there.
You are entering a world were there are thousands of choices out there and some loyalty will run deep. What I suggest is just to take it slow and try things out one by one. Once you find what you like you'll begin to see what is going to fit those likes and what will not. Don't worry about the right choices, just take the time to find what's right for you. Nobody is going to shame you for having Mr Wicked on you set up.