You may have noticed that there is a slight difference in being beholden to donors than having the donor class beholden to you.
Trump came out strong the first day against the whole immigration cartel, while Cruz stood silent waiting for hi money men to give him permission to speak out about a symbolic wall. Many Trumpets waited quietly hoping that Cruz would figure out why Trump was dominating the race on less than 5 issues, he did not. Whether he didn't get it or his donors would not allow it does not matter. I switched to Trump because of that issue and the Cruzers helped move me along as well.
My original comments about Trump was; He is a fumble mouthed blowhard that can't finish a sentence. Carly if given a spot on stage would blow him away, she didn't get a spot and she herself was made irrelevant.
I can cite Cruz mentioning a wall back in 2011 and 2012, back when Trump thought it was mean to even force self deportations.
Trump was still for a legalization amnesty and deportations only for the bad ones, until late July 2015. After that he was for deportations for all but an expedited touchback amnesty for the good ones.
In July, Trump even said that he would consider a citizenship amnesty later.
Those are the main reasons I'm still not for Trump.