When two boats share the same hull type — in this case both the Premier Boats SunSation X-Series 180 RE 2007 and the Premier Boats SunSpree 180 RE 2011 are pontoon designs with aluminum 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?
On paper these two are close siblings in the size department — Premier Boats SunSation X-Series 180 RE 2007 at 18,0 ft versus Premier Boats SunSpree 180 RE 2011 at 18,3 ft. At 15 lbs and 15 lbs respectively, both sit in a similar weight class — either should pair comfortably with most mid-size SUVs and half-ton trucks, though always confirm your specific tow rating with the motor added.
Both boats share a closely matched power ceiling — 75 hp for the Premier Boats SunSation X-Series 180 RE 2007 and 60 hp for the Premier Boats SunSpree 180 RE 2011. Real-world performance will come down more to which motor is actually bolted on, its load at the time, and whether it's a 4-stroke or 2-stroke setup.
For family outings this is probably the sharpest distinction between the two. The Premier Boats SunSation X-Series 180 RE 2007 is rated for 8 passengers, while the Premier Boats SunSpree 180 RE 2011 caps at 7. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Premier Boats SunSation X-Series 180 RE 2007 could be the deciding factor.
Bottom line: Choose the Premier Boats SunSation X-Series 180 RE 2007 if your priority is putting more people on the water — it handles 8 passengers and at 18,0 ft it has the deck room to back that rating up comfortably. The Premier Boats SunSpree 180 RE 2011 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 7 that costs less to run day-to-day.