Hello there to everybody at speedsolving.com! I am new to this site and to the world of speedcubing. Right now, I am using a rubik's brand cube, with my best time being around 48 seconds (with a little vaseline in it) using a sort of F2L for the first two layers and a beginners method for the last layer. (Right now I am working on PLL) I want to get a new speedcube, but I am not sure whether I should upgrade straight to something like a Dayan Zhanchi, or if I should do it progressively and upgrade to a slightly better cube every once in a while, eventually getting to the zhanchi. Any opinions? If you chose the latter, what cubes to you recommend I get? Where is the cheapest place to get them at, as well?Also, should I just use silicon spray for my lube or should I use a commercial product?