It really depends on what you want to be able to do programming wise , clone of zedbull is very limited on what it will clone , and clone sbb is also very limited on vehicles you can do keys to even more limited if you dont have codes , so with those 2 kits he has very little coverage .
theres a few ways to look at china kit , some is tat copy kit and some other kit is their own developments that are quite good. for instance for cloners its hard to beat the chinese handy baby and cn900 mini for coverage and to very cheap but reliable clone chips .
for programming skp900 and OBDstar X300 DP units offer alot of coverage for very little money and token free , both have their bugs but both very good kit with obdstar being the better of 2 so much so a mainstream supplier has copied some obdstar coverage , but although very good token free coverage you have no back up , support or comeback if the shit hits the fan , and if new to it you will get these moments when you realise adrenelin is brown and runny.
then more advanced programming kit from china you have vvdi 2 and vvdi mb tool , but with these you need support if new as simple user error can kill a car.
you cant go wrong with advanced diagnostics kit , also a good lower cost token free obd option is truecode, also supervag on vag vehicles , all offer excellent back up and support , something you dont get from chinese.
just as you cant go wrong with silca or keyline for cloning add miraclone to good cloner too and lockdecoders support is about the best out there, add too tango , your spoilt for choice.
for some support is not an issue , but for some its essential , some machines are a machine for life so an asset whilst china machines tend to be a machine for now and you will need to buy again , at some point everyone ends up with silca , keyline or mainstream kit , just some pay less as invest in the best to start with .