2600xm for SNRS lab

I'll come back for a discussion of SNRS lab, for now just a quick question on a hot deal...

I've got 2x2611, 2x1720's, 1x806, 2x831, 1x871... Do I want to buy a 2611xm for a good price ($100)? Is there anything a 2611xm can do for SNRS that the rest of my routers cannot? My 871 is "beefed-up" (128D/28F, 12.4T), others are less perfect (no more than 48D/12F, 12.3T and older).

TIA