As mentioned, what is wrong with your current marker? I've been down that road of "well if I had X piece of equipment, my game would elevate." I've never shot an etek 4 so I am not sure if something is truly hindering the performance but really think about if it is worth it. I just got back into paintball a few weeks ago after a 5 year hiatus and this guy at a local field let me borrow his Luxe half the day. Man that gun shot nice but... I ended up piecing together a full ego 9 setup (dye roter and tank) and getting all of my supporting equipment (JT Flex goggles, NXE pack, pods, squeegee, etc) for $500
I could easily afford the Luxe or any other high dollar marker but for me and my level of experience it is better to spend that money on paint/playing time. If you are truly at that stage where you think you will get a performance advantage with a higher end marker and have the means to comfortably afford it, by all means go ahead. But, it sounds like you are not at that level yet since you have only been playing speedball a couple of months. I would invest in playing time and maybe doing some tweaks to your marker if you see fit.
Or get a lv1 lol