Allison XB 21 Bassport Pro vs Alweld 1748 Flat Marsh LF Pkg: 5-year value retention (66% vs 66%), resale value, and cost of ownership head-to-head. Allison XB 21 Bassport Pro holds its value better.
On five-year value retention the Allison XB 21 Bassport Pro comes out ahead, holding about 66% of its value versus 66% for the Alweld 1748 Flat Marsh LF Pkg. Over the first five years the Allison XB 21 Bassport Pro loses roughly $24,696 while the Alweld 1748 Flat Marsh LF Pkg loses about $2,240 — a gap near $-22456.
First-year drop is the biggest factor: the Allison XB 21 Bassport Pro sheds about 11% in year one versus 27% for the Alweld 1748 Flat Marsh LF Pkg. If you buy used, the steeper early drop is what the original owner absorbs.
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