I chose to go with the 4 cups; 2 on my lower stomach, 2 on my upper arms.
It wasn't painful, definitely uncomfortable for the first 10/15 minutes. Marta was funny, knowledgable and very thorough. Given its only been 2 days, no results yet of course, hoping in 2 months to see some change, i have booked another session for next week already because due to the size and placement of the cups, i want to even out my stomach area.