[Roadsters] Loctite -- what do people like?

[nmleeds at mindspring.com]

Baffled by the dizzying array of loctite products I thought I'd ask which number people like.  I know there'll be someone on the list to explain their belief that 4203 is best for areas of the car that have heat, another number is good for heads and areas with oil and . . . but since I call it a good day when I can find my 12 mm wrench in my tool chest I'd like to stick to one bottle -- if possible.

Thoughts

'69 U20 SU, Headless.