Bosch boy here
Normal wash is usually adequate for average loads. For heavily soiled loads, I go with Power Scrub Plus. I'd say I use Normal 75% of the time and Power Scrub Plus 25% of the time. I don't rinse, I only scrape. The only time to soak something in hot soapy water is when there is baked-on food from the oven. Everything comes out sparkling clean, and the machine is seven years old. I wonder though if newer versions use less water and clean less effectively? My machine was purchased in October 2001. It has the two cycles mentioned above plus Quick Wash.
Quick Wash cycles in just over 30 minutes. It is ok for say cups and plates if you have a bunch of people over for coffee, light refreshment kind of use. However, the final rinse is only 120 F, so you have to allow for more time to for the dishes and glasses to dry after the cycle, compared to a cycle with a hotter final rinse. If you are washing food-soiled dishes with Quick Wash, you definitely need to pre-rinse them, not just scrape.
Quick Wash would be useful if you are having a large party and need to do multiple loads quickly, but you would need to have someone pre-rinsing the plates before loading them. You can't just load and go with this model. Miele has a new cycle called "Party" on some of its high end models. Maybe this is a fast cycle like Quick Wash, but hopefully with a higher rinse temperature than Bosch's Quick Wash.
When I ordered my machine, it had only been released by Bosch a few weeks earlier, and the dealer didn't have a floor model for display yet. I had to order it right out of the dealer's catalog book. Unfortunately, there was a typo in the book and I bought the machine thinking it had Power, Normal and Rinse-Hold cycles. A bit of surprise when it was delivered and I learned there was no Rinse-Hold. Quick Wash uses 3 gallons of water (Rinse Hold uses 1.5 gallons) so it's wasteful to use as a substitute for Rinse Hold. However I quickly adapted to never using Rinse Hold, it isn't necessary because the Bosch does such a good job on cleaning even if some plates and dishes are 4-5 days old. I needed to use Rinse Hold on my old GE Potscrubber because it cleaned so poorly, you would never want to hand it anything with dried-on soil.
So in retrospect I'm glad I got Quick Wash by accident, because I use it on occasion. Bosch now makes two three-cycle models at the entry level of the Integra series, one has Rinse Hold and one has Quick Wash, so you can choose which third cycle you want.