Do you want this for SMD work - or just for Thru-hole components? .. If an SMD station is required, you need to do quite a bit of planning and research - as you may need all sorts of extra bits / desoldering bits to cater for the parts (footprints) you will require, and these are expensive! (do you need, for example, a hot air gun for reflow?)
For me, the 'best' soldering / unsoldering equipment is very much a matter of personal 'taste'.. Weller equipment is probably the most popular choice - but I do not get on with it.. For me, it is too 'chunky', and my favorite is Antex which I find lighter and more comfortable for extended use.
I have decided not to buy a 'rework' station - My reasoning is that there is little economic value in doing so - I do not trust components which are 'salvaged' from a board (even if one manages to achieve this quite quickly).. So, with SMD, I cut the legs off the part (using a Stanley knife) and remove the debris with solder sucker and solder mop.. It will be a long time before the value of components I 'lose' by doing this reaches the cost of a full workstation capable of removing components which I can safely re-use.
The RoHS (lead free) solder is Awful! It requires greater heat which stresses components more than the old solder, and is far more difficult to rework. It is worth realising that soldering bits etc will last about 1/2 the time you are used to with lead solder - so worth checking the price of replacement bits and factoring this into you decision about which kit you buy.. It will be an ongoing expense.. Antex bits last well, and are cheap.
There is quite a lot of discussion on these issues on Electronics forums - it is worth checking these out.