Winnebago Solis 59PX

The Winnebago Solis 59PX is the family-friendly pop-top Class B: built on the wide, front-wheel-drive RAM ProMaster, it uses a pop-top roof and a convertible Murphy+ bed to sleep four in a 21-foot van that most rivals can only sleep two in. Add an onboard generator, a roof AC, and a clever full-height rear garage, and you get a van that works for a couple who occasionally brings kids or guests — without paying the premium that AWD Sprinter and Transit adventure rigs command. Around $138K, it's one of the most practical do-everything vans Winnebago builds.

Living with it, the ProMaster's strengths and quirks both show. The chassis is roomy, low to step into, easy to service at any gas-engine dealer, and the pop-top's side and rear screens deliver such good airflow that owners often skip the AC until temperatures climb into the 90s. But the PX trim makes trade-offs: fitting the rooftop AC costs you the Maxxair roof fan the 59P keeps, the large tanks and generator hang below the frame and behind the axle (hurting clearance), and the van is front-wheel-drive only, so deep snow, sand, and rough trails are out. ProMaster electrical gremlins — doors that won't lock, parking lights flashing — are a known RAM annoyance with a disconnect-and-reset workaround. The onboard generator is your hot-weather safety net, but it's loud and thirsty.

The Solis 59PX is best for the buyer who wants a capable, well-supported Class B that can actually sleep a small family on demand, and who camps mostly on pavement and maintained roads rather than chasing trails. Cross-shop it against the Winnebago Travato 59K — same ProMaster, but a no-pop-top couple's van with a stronger Pure3 lithium power system — and the Roadtrek Zion, a shorter ProMaster alternative. The Solis wins on sleeping capacity and ventilation; the Travato wins on off-grid power and the Coachmen Beyond wins on AWD. Pick the Solis if the pop-top's family flexibility is what you need.