Hi guys I'am a new owner of Surface Pro 3 - I5 4gb 128ssd. I've some questions about this machine: - I have been using Microsoft Stylus to edit some pdfs but it is not cofortable for me, so I end up using my own hand and write notes on PDF with the keyboard. I think this is because I'm not used to. - I know that Microsoft Stylus can be used as a mouse (open apps, browse the web...). The screen predict very well what you want to do when you approach the pointer to the screen. Is there any compatible Pen that does this function? For example, Wacom, Targus, etc. Is this an exclusive function of Microsoft Stylus? I tried Xodo PDF because it is free on Windows Store. People talk wonders about DrawPDF, but it cost 9€ (I know, just three beers) and I would like to try with free software. - I use my Surface mainly as desktop pc, always connected to AC. ¿Is there any problem with this? (maybe it affects battery). My battery % was stuck at 99% when full charge, but with the last Windows update (this week) % is now 100%. I thought that when battery is full, and the AC still connected, there is no problem with battery because the electricuty goes directly from the charger to the Tablet, avoiding the battery. Is this correct? - Last, I have deactivated all background apps because the fun was always at max level. I have noticed this has changed, but perhaps it is still early to conclude. This is all. Hope you understand my explanation. Sorry for my english !