Tsi100 vs Tsi200 (vs TSX110B/M40ii/M45) for center

Current Setup
Fronts: TSi300
Surround: M30ii
Rear: MS Carnival 1
Sub: MS Carnival 9

My area for a center can accommodate a bookshelf speaker so using a bookshelf in the center's place. Of these which would you recommend.

TSi100
TSi200
TSX110b
M40ii
M45

Current Setup
AV: Onkyo TX-NR709
Front: Polk TSi300
Center: Polk Monitor CS20
Front Wide: Polk Monitor 30ii
Surround: Mordaunt Short Carnival 1
Subwoofer: Mordaunt Short Carnival 9