Based on our previous conversation...
...and your pending sub purchase...
If dude will let you audition, and you like the sound, then perhaps you can wring a year out of them while you save for something better still...
Strategize... can you use those s60 towers as surrounds next year when you upgrade your front 3 (yes, center included) to something much better still?
If yes, and you like the sound of them now... then maybe its worth it.
You should still keep your mind open to auditioning other speakers and expanding your sound-knowledge!