Registered Agent? Northwest Registered Agent or Maryland Registered Agent Inc? Or be my own Agent?

Hi, I want to form my solo LLC as a requirement from my consulting partner. I've been looking for a registered agent in Maryland and a lot of websites and people recommended the Northwest Registered Agent ($100ish fee). I looked them up and their registered agent is Maryland Registered Agent Inc, which has a fee of $49. My question is should I just use Maryland Registered Agent Inc as my agent if one of the most reputable agent company also uses it. Are they the same companies even? To avoid any issues, should I just be my own agent?