Well, here are the digital portable scanners:
Radio Shack PRO-96 ($500 new, on sale occasionally for $400, can be found for about $300 used). Works on all 800 MHz. digital trunked systems in Illinois, including NWCD and the 800 MHz StarCom21 sites.
Uniden BC-250D (With Digital card). Available used only, usually around $200 or so. Works well with NWCD, but will not track StarCom21.
Uniden BC-296. (Available used only, usually around $250 or so).
Identical to the 250 but will track the 800 MHz. StarCom21 sites. Will work fine with NWCD.
Uniden BCD396T. (New about $550, occasionally found in the used market about $450 or so).
Works with all NWCD and StarCom21 sites.
GRE PSR-500 (New about $550, occasionally found used about $450 or so).
Works with all Starcom21 sites and NWCD.
One more caveat: With Rebanding you might have some issues with the BC250 and 296. I have heard conflicting reports about the ability to flash these for new new bandplans that are supposed to be in place when rebanding of trunked systems come about. The PRO96, PSR500 and 396 should work fine after being reprogrammed for rebanding.