The short version
Bemer is the best-known proprietary-signal mat. Healthy Wave is the modality-stacked alternative at half the price. Neither has independent trials showing a health benefit; see PEMF therapy — the evidence.
When is Bemer Classic Evo the right pick?
If you want the best-known proprietary signal and a premium multi-applicator build. Bemer cites more studies than any other consumer PEMF, but most are small or manufacturer-linked, and independent controlled trials found no difference from control. Its FDA clearance is for non-medical muscle conditioning (product code NGX). Accept the premium pricing.
When is Healthy Wave Multi-Wave the right pick?
If you want recovery-modality coverage per session and you don't need a proprietary signal — Healthy Wave stacks PEMF with far-infrared and red light therapy at meaningfully lower price. Several modalities in one mat, real parameter control, half the Bemer cost.