Small Windows tablets

Since we have a lot of Windows software (ACT-R 6.0, Soar 9.3.2, etc.) we're interested in complementing our ipad mini and nexus 7 tablets with something running Windows. We currently have a 10.1 inch Windows 7 tablet and were considering a WinPad micro or a WinSlate mini running either Windows XP or Windows 7.  We've been holding out for, possibly, an Acer Iconia W3 or something else running Windows 8.  Today the local Staples staff tell us that the first batch of Iconia W3s sent to the stores were defective and had to be returned.