DH want's a new toilet that swirls water around the rimless rim (which the adverts say cleans more of the bowl and at the same time uses less water). I'd settle for anything that avoids the dreaded TB word, or having to flush multiple times to clear the remnants....he's looking at Grohe, Villeroy & Boch or Geberit, but before he spends most of the budget on one of these I wonder if anyone has experience with these new gizmo's and how effective they are, or should we just go "bog standard"?