After doing some research, I chose the LG tower to replace a 25 yr old Frigidaire frontload stack. The LG has the features I want, fits in the same space with no alterations needed, and is a top-rated brand for reliability.  Also, it's gorgeous!

Favorite features:
• easy to reach controls (in middle as opposed to top of stack)
• drum lights
• prewash, extra rinse & steam functions

Only minor complaint- the dryer door gasket picks up a bit of lint each load, but it wipes off easily with a damp cloth.