Ehh...It's pretty good, I feel a lot of features from it could be added to this one.
Over the past day, I've gotten from level 400 to 640 thanks to the 10x exp rate.
The material injection isn't very good as it misses a lot of materials. I wasn't able to create any spheres with it.
The sphere injection works well, but it only lets you inject incredibly powerful spheres like the vortex arena wings and guild spheres. They are nice, but if you actually want to use them people might grow suspicious unless you're a veteran player, they are old spheres.
My favorite feature is the omni material injection, as getting elementum tomes sucks. Normally, you can get like 15 per month. But now I can get thousands; I've easily gotten all my omnis to +3.
The vortex hack works well too, but I mostly use it for evo material and karma dungeon. You'll definitely get banned for playing very old vortexes.
After I get 999, I'll probably do the summoner arc and get to level 500 with the no cost STP.
Overall, it's pretty good. The price is steep unless you pay for the longest amount of time. I really wish the features would be added to this hack, but I don't think it has many players anymore so it isn't in high demand.