Totem Forest vs Proac Response D15 vs Spendor s8e

I currently am in the market for a new/used set of speakers. I'm looking for a pair of speakers that will only improve as I upgrade my electronics in the years to come. I have not changed my speakers in the past 15 years so I want a pair that will give me at least several years of service. I'm considering the follow speakers: Totem Forest, Proac D15 Response, and the Spendor s8e. Any advice would be great!

I'm currently using the following equipment with plans in the next couple years to upgrade the Rotel gear:
Rotel 1075 amplification
Rotel 1098 preprocessor
Arcam FMJ DV27 dvd
Arcam CD92 cd player
ps audio p300
Audience au24 speaker cables
Harmonic tech truthlinks
current front speakers: B&W CM2 Concept 90 speakers from the late 1980's.