Somewhat of a subject change, The open toebox in the newer SPK pro models felt the same way for me, I found the open toebox to be less responsive compared to my older SPK's because of this.
However personally prefer open toed wakeboard boots, I have the Shane Bonifay open toe pros from a couple of years ago and they are my favorite boot so far. I found that the close toed boots had water stuck in the boot when riding.