whats a decent brand of feeler gauge?

[armalites]

I really like these ones, I like the bent ends

Snap-on Store

shop.snapon.com

There was a complete set on special a couple of years back that had these and 4-5 others and I think it was about £45.

 

[Old Dog]

Second the Snap-on ones, one of their tools that are worth the money.

 

[Keithmac]

I normally take the bent ones to bits, do the job then put them back together.

Doesn't take long really and oddly satisfying putting them back in order after wipe down.