I usually advise patients to start with the Green color Superfeet. Try it on to make sure it is comfortable. Feeling different is ok. If the insole hurts your arch, try a different color. Blue or Pink/Berry would be the next step. There is also a 3/4 length EasyFit device that is great for dress shoes or flats.
Soft insoles are a great option if you are looking for a bit of arch support and cushioning. They are really inexpensive and should be replaced every 6 months.
Superfeet closed-cel foam supports are made from High-Density Foam and cushions the foot for long lasting comfort. The rails of the Superfeet orthotic support shoe inserts reinforce the narrow cap to provide structure and support. The heel cup helps position the heel to naturally absorb and soften impact from the ground. The medium-profile shape of these orthotic shoe inserts puts support right where you need it, but takes up less space in the shoeFull-length Superfeet insoles are supposed to be trimmed to fit in your shoes.