can someone highlight the differences between this PCB and the XD87 by kprepublic? Was ruminating on getting this for an alps tkl build for a while, then I came across the XD87 which apparently also supports alps. I see that this one uses QMK, which is awesome, but the XD87 being 12 dollars cheaper is definitely appealing to my literally empty wallet, especially if I'm considering buying two PCBs. and lastly, will the XD87 case work with this PCB? unsure of what bottom USB not top means and if it applies to the XD87 case, but if its something relatively easy that a dremel can solve, I'm okay with this. Hard pressed to find a cheaper tkl case anywhere, most of the compatible cases on the list are distant future end game cases at the moment.