Lozics tune seems to be pretty solid for me, its noticeably faster and making more boost on pump gas alone compared to my JB4, which required e85 (which I don't have in my state) or boostane to raise the octane to safe levels to make comparable boost numbers. I average 20lbs on 1.4bar but I've seen peaks of 22. it also is more consistent then a piggyback can be, due to the fact that the stock ECU on a piggyback is still regulating how much boost to use as a starting value based on environmental conditions.
However, I am NOT a fan of the "Boost Ready" function as the slightest touch of the gas pedals will get me spooling to several lbs when its unnecessary. I did buy my tune used however and the person I bought it from had that enabled, so I am going to live with it until I feel like coughing up the extra money he wants for Support and modifications to the tune that he would normally do for free if you bought the tune directly from him, So I'm not counting it as a negative as I knew what I was getting into.
Lozic does also offer a "Boost by Mode" feature which effectively caps how much power you make in eco and comfort. As long as the Boost cap for the Custom drive mode is set to the same limits as sport mode is, then I plan to enable that as it seems like it would be a good thing not only for gas mileage, but also if you have someone that is less than comfortable driving a fast car, just throw it in eco mode, the car will probably be as fast as the 2.0T is stock, and Comfort mode will get you the cars stock level of power I believe.
you can also customize other things like pops and bangs and whatnot but I am really not a fan of that kind of thing so.
I have 0 experience with any of the Lap3 tunes so I got nothing for you there, but they do have local support instead of needing to ship stuff to south Korea, and Im sure if you asked the Lap3 guys to do a boost by mode feature or something similar, they probably would for the right amount of money.