Some people can get away with a tablet exclusively, but you need a Windows machine for audio design work and a keyboard for writing. What Windows 8 does is potentially ties desktop, laptop and tablet into a single device. Ideal would be something like an Acer Iconia W700, Surface Pro or Ativ Smart PC Pro. The thing is, such machines are either unavailable in India or exorbitantly priced. These are all in the $750 to $1100 range in the US, so if you have anyone coming down from the US, worth considering. Needless to say, all have top notch 1920x1080 IPS touchscreen displays and microSDXC slots. How these work is - dock them up to your monitor with keyboard/mouse for all productivity and content creation, the tablet remains attached as a nifty touchscreen "dashboard" of sorts. Personally, for writing / productivity, I completely agree, nothing beats a full sized standalone keyboard with a large monitor. Unlike ARM tablets, these run full blown Ivy Bridge U processors, which should be powerful enough for audio design work and most other content creation. Where it gets rather interesting is, undock them, and hey presto, they are tablets! Dock them to a keyboard dock, and they become laptops. All your work, files, apps, everything will be available on the move. If you want to make a quick correction or review your work on the go, you can.
Of course, this isea is not perfect, yet. Thing is, Windows 8 is ahead of its time, and Intel's answer only comes with Haswell Y series. So today, these tablets really just run repurposed laptop chips and as a result, they are 200g-300g heavier than Android tablets, 3-4mm thicker and battery life is 5-7 hours. Even so, they are still way more portable than laptops, without the severe limitations of tablets, so the utility would still outweigh those drawbacks easily. Of course with Haswell, these drawbacks would start to vanish and that is when they will start becoming no-brainers.
By the way, I understand your wariness of Asian brands. Truth be told, they do make cheap stuff which are as cheap as they look/feel. That said, they also have some superb high-end products. So don't write off entire brands, consider product by product. Even a bottom barrel bargain company like Acer has stunning products - look at Acer S7, phenomenal device. Indeed, if you asked me to name the top five ultraportable laptops today, 4 out of 5 would be Asian, with 1 American.