oooh. you have a machine without turbowash? the only thing it seems to do in my case is that it speeds up the washing time. without turbowash most cycles would take 1.5 to 3 hours. pressing the turbowash button basically halves that time. i don't think we run cycles that are more than an hour unless you are using the steam function. i would suggest getting the model with turbowash unless you use the machine with full load on a regular basis. at my place, clothes are washed on a daily basis so we prefer smaller wash cycles. before i switched to pods, i just used the 15 minute cycle. now i run the machine every second or third day when there are enough clothes for a pod (8-10 pieces).
as for the powder recommendation. powder for stuff that you do not really wear. like towels and bedsheets. i have switched to pods for my own cloth. mom switch between pods and liquid based on the amount of clothing in the machine. pods for a medium load. liquid for a bigger load. i know it's a mess but i stock up items when they are on sale and i usually have all three in stock at any given time so it has become usual to cycle between them based on what you are washing. but if you want to stick to a single product, i would suggest liquid as it does not mess up the tray and is tend to be softer on the cloths.
and of course, if you have hard water in your area, keep a descaling solution or powder with you and use it regularly.