We want to get hardwood (engineered) for our first floor which is a slab. I have gotten conflicting quotes - two installers are saying glue down while another is saying float (just will glue the seams). Our foyer is currently glued down and will be removed. I want to tile our laundry room and small entry area by garage door and would love not to have any transition pieces. Should the tile be done first or the wood? What are the pros and cons of glue down versus float? I want this to last for the long haul. Our house was built in 1992 and currently has carpet and vinyl in kitchen area.