Thanks for your replies, very helpful and much appreciated.
I guess that there might be serious drawbacks with the KingSpec disk. I need an 1.8" so I'm a bit limited in my selection. The disk below is easy for me to find here in China and quite affordable too (less than 800rmb, US$120). One would expect electronics to be cheaper here but that is not always the case due to steep import duties etc.http://www.kingspec.com/solid-state-disk-products/ssd-18cf-mlcj.htm
Do you think this one is a waste of money? What would my budget 1.8" 64GB options be?