Roomba j7+ vs Roomba 675: You're paying for smarts, not suction

The j7+ costs three times the 675 but doesn’t vacuum better — it’s the autonomy that costs. The 675 is a basic tool you manage, bumping into furniture and needing manual emptying. The j7+ self-empties, avoids cables and pet waste, and actually recognizes obstacles. Both clean floors fine; the j7+ just does it without you.