After 3 days of use I must that all is exactly what I wanted, finishing and good quality use all is fluid, even with several applications launched ... the tablet is a bit more a heavy Ipad but Windows was against party office and with the resolution and very correct.
The keyboard and nice and pleasant, both very useful USB port.
Only complaint for the power cable that is not in mini usb.
When the sizzling sound, I do not find the problem.