Always heard Est wing in the UK.
They are durable, the handles stay on unlike some cheaper brands, but will ruin your elbow if you are driving nails all day, which is something that just isn't done much now.
Titanium is nice, you get less weight for a given head size, so you can have a big framing head and it will be 16oz instead of 22oz, which can allow a faster swing which will deliver more energy, plus it rebounds less which reduces the vibration you feel and delivers a bit more energy, if its a titanium handle it will vibrate much less than a steel handle.