I am having my 22 year old Rheem heat pump replaced. After meeting with numerous local firms and reviewing their quotes I have narrowed my selection of quotes/equipment down to Lennox and Trane. One primary difference seems to be the Lennox quotes are recommending an ECM blower and the Trane quotes recommending variable speed blowers. I've been advised that the variable speed blowers have additional features that make them preferred over ECM. (For space reasons I am limited to certain dimensions of blower units).
The recommended equipment seem similar (to me) in quality and size:
Trane: 2.5 ton XL15i heat pump w/ 4TEE3F31 variable speed blower;
Lennox: 2.5 ton XP14 heat pump w/ CBX27UH030 ECM air handler;
Does the variable speed blower offer enough additional capabilities to be the decision maker between these two configurations?