There is no single best brand. The right machine depends on your caseload: gynecology and early pregnancy, routine obstetrics, or fetal Doppler and growth.
Prioritise image quality on the probes you will use daily — usually a convex abdominal probe and a transvaginal probe — over add-ons.
Ask for live demos on your own patients, compare service networks in your city, and negotiate warranty and probe coverage.
Independent guidance — without vendor commissions — often saves more than its cost.