I have used a lot of Forester branded chain and bars. Overall i am happy with it. Have used both their full chisel and semi chisel chains. Also laminated bars and the solid replaceable nose bars.
I am actually putting a "like new" 18" forester pro nose bar and forester semi chisel chain on a 455 i am selling. Not because i am glad to get rid of it, but i am confident enough to put it on a saw i am selling because i know it will cut well and be reliable. I do use Oregon chain a lot. I also run a fair bit of Carlton chain. Also i use some Stihl chains. First off i will say that it does get dull a bit quicker than the 3 other brands i use, but for it's price i cannot complain. Plus due to the price i can have 3 loops for the price of one big name brand loop. I have not experienced major problems when resharpening. It still cuts well for me after being hand filed or put on the grinder.
I cut mainly Aussie species of hardwoods. I do occasionally cut some maple and oak, cypress, spruce or radiata pine. Cutting softwoods to me is like having a holiday! It feels like i am not doing any work!
My saws running GB EVOII or forester chain just fall through the smaller diameter wood. If i am cutting green wood usually i use mostly chisel chain. In dead or very dry wood (or green box species wood due to it being so tight grained) i mostly use semi chisel. I've been using these Forester chains in all sizes for everything from limbing with my 338XPT, to bucking big trunks (around 40") with my 7900 and all my saws in between. In all sizes 3/8 LP, .325 and full size 3/8" i have been impressed with its cutting speed and how it stays sharp relative to it's price.
I have found that the newest GB EVOII Chinese chain i am currently trying out, is
identical in appearance to the Forester chain i used to import from the US. Not 100% sure about the similarities at a metallurgical level, but so far i cannot tell a difference at all in regards to holding an edge and in feeding and cutting speed. Honestly if they were not different size loops, i would not know which was which!
If i was told it came out of the same factory i would not be surprised!
At the moment i am buying the GB EVOII chains and GB bars from a good local supplier here because it is way cheaper for me than importing due to shipping costs or unfortunately buying locally due to extremely optimistic pricing from local dealers. After all the crap with GB in the past i was hesitant to support them and buy the newer Chinese made bars and chains, but at least the company is still Australian so some money will be coming here i guess. They are not as good as the older "GB Made in Australia" bars but are honestly close to it at good prices. I am lucky to have about 5 "Made in Australia" GB 20" CN40 bars in Husky large mount squirreled away for a rainy day.
In the end everything is relative. If i wanted to go out and pay $50 a chain loop from Stihl (or Carlton or Oregon) i would no doubt be happy with how it performs. I do run a lot of brand name chain myself. I will be forced to hand file out in the field more though due to having one chain for my $50. I pay around $17 a loop for the GB EVOII same size chains and can run one on the saw and have 2 spares for the same Stihl or Oregon money. I know i am getting better value as it is more productive for me to swap over to a new ready to go sharp chain than to hand file a chain on the saw when it gets dull. I need my saws to be productive for me to make a living off of them. If they don't cut well, i don't get much done, and i don't get paid well. It's that simple. So far the GB EVOII chains and Forester branded chains and bars i have been using have served me well and i am very happy with them. Until i have something bad to say i will continue to buy them.