Anyone used paint pens?

[BMHouze]

I need to do a few touch ups on the Checkpoint.
Just wondering if anyone out there has any particular favourite brand.
I have used the Tamiya paint markers in the past (camo on a tank model). but they didn't come in too many different types of tips.
I have meetings in London on Thurs, Fri so I could easily stop by a hobby shop or a micheals...

 

[DRANO]

MOLOTOW
you can get them at curry's
Plenty of colours and tips.

 

[BMHouze]

Cool it's only a city block over from where I will be anyway.
Thanks