When two boats share the same hull type — in this case both the Allison XB-21 ProSport S.U.B. 2010 and the Allison XB-21 ProSport Tournament Elite Bass 2011 are modified vee designs with composite construction — the buying decision usually comes down to a handful of practical questions: how many people are you putting on the water, how far do you trailer, and what does your tow vehicle weigh?

The Allison XB-21 ProSport Tournament Elite Bass 2011 tops out at 510 hp. Engine specs for the Allison XB-21 ProSport S.U.B. 2010 aren't listed — confirm with a dealer before selecting an outboard.Both carry nearly identical fuel loads — 36 gal and 36 gal — so range won't be a tiebreaker here.

For family outings this is probably the sharpest distinction between the two. The Allison XB-21 ProSport Tournament Elite Bass 2011 is rated for 6 passengers, while the Allison XB-21 ProSport S.U.B. 2010 caps at 5. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Allison XB-21 ProSport Tournament Elite Bass 2011 could be the deciding factor.