[AT] OT - Question about chain

[Mike]

Hi guys, I need to upgrade the rag tag bunch of chains I have around the 
place and I'm looking for some input.  I generally use the chains to 
pull on trees that are hung up on others and to dangerous for me to cut. 
I have some 1/4 grade 30 chain  that I have pulled on hard enough to 
deform, and some 5/16" grade 30 that has held up well, but I only have a 
short piece of that. I'm looking at 1/4" grade 43 high test that has a 
working strength of 2600 lbs twice the 1/4 grade 30. I use either my 
Massey 255 or my pickup depending where the tree is.  Do you guys think 
the 1/4" grade 43 is enough or should I bump up to 5/16" $$. Any input 
would be appreciated.
Thanks,
Mike M