I have the whole flock, including the stutter. The jake is hands down the single most effective one of the bunch. When I have had both the stutter and jake out together, birds always walk around the stutter and go straight to the jake. I mostly just use the jake and hens now, and save the strutted for special occasions. Start with the jake and use the hens you have until you can afford to add a DSD hen. Then I would suggest getting the upright hen first, she's much more noticeable than the feeder, especially when the grass starts getting tall mid-season. The hen decoys are great for pulling in live hens, but I've never had a gobbler come in who didn't go to the jake first.
I have an extra jake that I picked up in a package deal a while back that I hadn't gotten around to putting up for sale yet. PM me if you're interested in it.