When two boats share the same hull type — in this case both the Allison XB-21 BasSport 2+2 Tournament Elite Bass 2010 and the Allison XB-21 ProSport Tournament Elite Bass 2010 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?
For family outings this is probably the sharpest distinction between the two. The Allison XB-21 ProSport Tournament Elite Bass 2010 is rated for 5 passengers, while the Allison XB-21 BasSport 2+2 Tournament Elite Bass 2010 caps at 4. 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 2010 could be the deciding factor.
Bottom line: Choose the Allison XB-21 ProSport Tournament Elite Bass 2010 if your priority is putting more people on the water — it handles 5 passengers and at 21,0 ft it has the deck room to back that rating up comfortably. The Allison XB-21 BasSport 2+2 Tournament Elite Bass 2010 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 4 that costs less to run day-to-day.