Personally, I haven't used the Sakura so wouldn't like to comment but I can vouch for the MST and Yokomo chassis'. Again it all comes down to how serious you are (as teshi said) and how many pennies you have to spend.
You could always cut straight to the point:
http://www.msuk-forum.co.uk/topic/186639-max-speed-technology-ms-01d-top-drift-chassis/
I wish I took teshi's advice now and bought his old FS-01, it would have saved me a fortune. Instead I opted to build from kit and then hop it up as I went, in the end I had it maxed out in about 6 weeks. I could have gained the same knowledge by stripping and cleaning the chassis instead of building it from kit to be honest.