Well TS... u need to answer these few questions first,
1) What is the maximum setup weight of your equipment (Camera body+lens+add on accessories such as battery grip, external flash, etc), are you going to buy heavier lenses and equipment in forseeable future?
2) What is your choice in tripod head - ballhead, gimbal, level head, etc
3) What is your height and what is the comfortable working height you would want your tripod + tripod head to be (this can be crucial, trust me).
4) Do you mind the heavier tripod or die die need something light (aluminium vs carbon fibre)
5) What is your budget?
6) Are you brand conscious (many people are, some die die need to have a Manfrotto or Gitzo, others use any tripod that suits their needs)
So without answering any of the abovementioned, you can buy the tripod, then later either outgrow it, got tire of it or the tripod don't suits your purpose at all and no one could answer those question for you.
By the way, I was using the Sirui for a two years, before biting the bullet and got myself a Gitzo.... please note that the Sirui is still working fine, it is just that I wanted a Gitzo (call me brand conscious or what, I don't care
)