Fanless 2 in 1 laptops - Acer - Asus - Microsoft - Have you one of these ?

I’m looking to buy a new fanless 12 inch screen 2 in 1 detachable laptop type computer for every day non intensive use .

Ive narrowed my choice down to the following 3 that are within my 30,000 Baht budget range ( in no preference order )

1. Microsoft Surface Pro 4 Core M-128GB / RAM 4GB ( including Type Cover and Pen ) Priced at 28,900 Baht

http://www.lazada.co.th/microsoft-surface-pro-4-core-m-128gb-ram-4gb-type-cover-forsurface-pro-4-black-8168196.html?setLang=en

2. Asus Transformer Book T300CHi - Priced at 24,590 Baht

http://www.lazada.co.th/asus-transformer-book-t300chi-fl006t-core-m-5y714gb128gbssd125win10-black-7460461.html

3. Acer Switch Alpha 12  Core i3  -Priced at 25,490 Baht

http://www.invadeit.co.th/product/2-in-1-laptops/acer/switch-alpha-12-sa5-271-35x3-nt-gdqst-005-black-p028768

I know the internet is full of reviews , but I thought I would ask if any one here had any personal experiences with any of the above models and can offer advice / thoughts / suggestions / recommendations . 

Thanks .