Four Winns H4 Surf Prem Sound PK vs Thunderbird Formula 240 BR: 5-year value retention (55% vs 55%), resale value, and cost of ownership head-to-head. Four Winns H4 Surf Prem Sound PK holds its value better.
On five-year value retention the Four Winns H4 Surf Prem Sound PK comes out ahead, holding about 55% of its value versus 55% for the Thunderbird Formula 240 BR. Over the first five years the Four Winns H4 Surf Prem Sound PK loses roughly $65,794 while the Thunderbird Formula 240 BR loses about $80,190 — a gap near $14,396.
First-year drop is the biggest factor: the Four Winns H4 Surf Prem Sound PK sheds about 32% in year one versus 36% for the Thunderbird Formula 240 BR. If you buy used, the steeper early drop is what the original owner absorbs.
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