I have a front loader washer and dryer and I love it. I have never had the moldy smell..why? Because I read the directions and follow them..After I finish my loads of laundry, I wipe the drum and the window dry, remove the tray where the soap etc are put, let that area dry and I put a thin towel on the drum just enough to keep the door from closing..no smell. Also there is a product called Afresh and my machine alerts me every 30 loads to run a hot cycle using this tab which cleans out all the lines. Works just fine.
Ive been using mine for 13 months now and not once have I pulled the soap tray out. I need to do that.