New UPS - 15/20/30amp?

My current ups is APC SMT1000RM2U and I currently only have about 5-6 minutes of backup time on it when I lose power. Believe I’m currently at about 300-400 watts. I’ve been looking more at Eaton and also Tripp Lite (now owned by Eaton) and some APC models. I plan on expanding my network with a slightly more powerful server at some point, also adding more poe cameras. May venture other stuff as well so I don’t think I wanna limit myself to 1500va.

I would like room to expand power/watts in the future and I want an UPS that is expandable to provide longer runtimes. Bare minimum I’ll get a 1500Va ups, but is any benefit to going with a 3000va over 2200/2000va? Does anyone have a eaton 5px g2 they can speak on?

Eaton Tripp Lite SMART2200RMXLN Eaton 5PX1500RTNG2 Eaton 5PX2000RTNG2 Eaton 5PX3000RTNG2

APC SMX3000RMLV2UNC APC SMX2000RMLV2UNC