As per the thread title.
Just after a standard size bayonet LED bulb that is nice and bright (at least 100W incandescent equivalent) but is also dimmable.
EDIT: After 2700 or 3000K
No idea what the store is like, but these must be close to the brightest:
3000k with Bayonet Cap fitting - Say they are equivalent to 100w.
Looks like they would need to be around 15W to achieve a similar brightness to a 100w incandescent (1500 lumens).
Nothing is impossible for the man who doesn't have to do it himself - A. H. Weiler