I thought about doing a kind of best of all the mods available out there for the prusa i3 (too many to be accounted for). Probably the most annoying part is to reverse the order of the LMU88 (1 on top and 2 on the bottom instead of the other way around). I think this way is more rigid (support closer to the effort). This combination work well with the anti-backlash on the Z axis (soon to be released here as well). Enjoy and comment ;)