A friend of mine has an HTS2500. I myself have 2 HTS3500's. Another friend of mine has 2 HTS5000's.
We've all been pretty happy with them.
On one of my HTS3500's I've got a 32" Toshiba CRT, a receiver (120w x5), a surround EX amp (100w x2), 2 powered subs (125w x2), a 1500w Step-Down Transformer for running 100v Japanese gear, 2 DVD players, a video standards transcoder, and an X-Box.
So that's a total of 9 channels of amplification, 2 DVDP's, one 32" monitor, a 1500w transfomer, a video converter, and an X-Box off of one HTS3500.
The other HTS3500 has a VCR and a few game systems running off it.
I've not had any problems with the HTS3500 handling the load I listed. While I don't know the exact amount of jucie 5 MB-100's pull, I doubt you'd have a problem running what you described off an HTS2500.
But I would suggest going for a HTS3500 or HTS5000 over the HTS2500. The higher up models have better filters and surge protection. And they've got a few other small features that the HTS2500 lacks.