Stop in for a cup of coffee

Good Morning Mopar Maniacs !!!
Just finished prepping and starting a 5lb pot roast in the crock pot. Peeled potatoes for what seems like forever. All good now, and will cook for 8 hrs. Will add the potatoes in 5 hrs so they dont get all mushy..... :thumbsup:
What potatos do you use? When i do a roast the potatos turn kinda grainy.... and it's horrible especially after reheating days later.. I been buying the bags of baby potatos though..