Not a gunwriter.
The safety on my timney is very positive and it is an US company. I didn't have to fiddle with bending the bolt release on the Timney like I did the TT to get it to work. The TT design may have advantage in very dirty conditions, according to them, but I am not going to drop either in a mud puddle to determine if it is an accurate assessment. If I hadn't gotten into practicing offhand and preferring a sub-three pound pull I would kept the Walker triggers on my two remaining Remingtons. I can't tell the difference between the TT and the Timney pulls but I am just a duffer rifleman.
