I have to remove the grout where the walls and floor of my shower meet (it's cracked; replacing with silicone). While I realize that using an oscillating tool would make my life easier, I don't have one (and don't want to get one just for this job). So of the two types of grout cutters available, which is better/sucks less?
https://www.homedepot.com/p/QEP-Gro...ERCH=REC-_-pipsem-_-305213127-_-100194652-_-N
https://www.homedepot.com/p/RIDGID-...ERCH=REC-_-pipsem-_-305213127-_-301655785-_-N
https://www.homedepot.com/p/QEP-Gro...ERCH=REC-_-pipsem-_-305213127-_-100194652-_-N
https://www.homedepot.com/p/RIDGID-...ERCH=REC-_-pipsem-_-305213127-_-301655785-_-N