hey guys, I really need to buy a mouse to use on the go! I thought about the arc mouse, but i read there are occurring issues regarding the use of the Bluetooth and WiFi at the same time. but appears that MS also sells the arc mouse with usb transceiver, so, whats the best option, the BT or the USB version? here the USB version: Microsoft Arc Touch Wireless Mouse | Microsoft Hardware and does the scrolling work good even though there is no wheel ? Or Does anyone know if any update fixed the BT wifi issue?