We all have favourites but different types have different uses. What I use is as follows:
Mr Cement S - this is an extra thin cement (like
Tamiya Extra Thin but even better). This is my main cement that I use for 80% of jobs. You hold the parts together and apply a drop of cement to the join and allow capillary action to weld the parts together. It can be used for everything from joining small parts to joining fuselage halves.
Mr Cement SP - this is new in my armoury and may well take over as my main cement. This is like Mr Cement S and used the same way but grips even faster. I dont see it as replacing Mr Cement S as sometimes it is useful to have one that still grips fast but provides a little more adjustment time. There is a black version of this that I have not tried yet but I an see how it would be useful for seam checking.
Mr Cement De Luz - this is my slower drying cement and I use this when you have no choice but to apply cement to a part before mating it. This does not get used very often but can be useful. The other two cements evaporate too quickly to use by this method.
Gator Grip Glue - This is my canopy glue, dries clear. Best not used on load bearing parts. Sometimes also useful for p.e. parts.
Three types of c.a. superglues; these are used to attach metal parts including p.e. also often for final fittings at the end of a build for weapons, aerials etc.
Thick - jell like c.a. that I use when I need plenty of adjustment time.
Medium - my general purpose c.a. for most jobs
Thin - when I want to use capillary action with c.a.