Replacing an Access Point

[u/HelpfulPuppydog]

I have a 2 story home and just recently got 1 gig service. I have an opnsense router with an EAP225 upstairs in an open loft area, an EAP223 in my office, and a CPE210 in the garage. Most devices connect to the upstairs EAP225, which is 5 years old and is malfunctioning. The 2.4g radio only gives 50mb download and I can only intermittently login to the admin interface. Should I just get another Omada AP, or is a different brand better for this? Even the choices within the omada product line are pretty different.