1.We have used barcode scanners for reading workorder labor routing information for abour a year now.  We bought programmable barcode scanners which can hold up to 4 programs.  Our employees only have to scan their badges and the route sheet (work order pre+suf).  2 scans with no keyboard interaction.  
 
The program DC-C works pretty well.  There is the ocasional hangup in the DC application which is now down to 1-2 times a week but still a pain none the less. We have 5 time collection computers distrubuted around the plant.  No person is greater than 60' away from a terminal.  You can call me should you want to discuss further.
 
2.  We do not use QC but you might check into the new program HH-I paperless shop floor.  It looks pretty promising.
 
Hope this helps.

We are using Symbol / Motorola LS 2208 units at the shop floor workstations.

Debra
 
We are using a Motorola MC3090(formerly Symbol). The MC3xxx units are pricey but a solid solution for a truely mobile real-time shop environment.  Once configured they are pretty bullet proof.  Motorola's staff has been very helpful (suprisingly) with writing custom boot scripts too. It is used by our shipping / receiving / material handlers.  They use it for receiving materials and receiving finished goods.  
 
 
FYI we run EVO and Classic on a Win 2003 server, We have a seperate 2003 Enterprise server 64 bit edition for running terminal services.  Add in a couple of Cisco wireless access points ($275ea) and 1 MC 3090 (to start).  
 
I also consulted several companies out there and found  much better pricing with a local company Vairant Microsysyems.