Well there is no easy dovetail jig, some are easier than others but.... there are a lot of steps to follow to get the joint cut to where it both fits and looks good. I have the Porter Cable 4216(PC) which is capable of cutting many kinds of joints. The PC like almost all dovetail jigs is lacking in clear detailed instructions. In other words you have to play with it then adjust it and if you are like many keep adjusting and adjusting until it collects dust in the corner of the shop and oh speaking of dust get ready for a chest/belly covered in shavings and dust...... That's the negative.
The positive is if you can ever get it set up correctly and follow all the needed steps it can produce a nice finished project.
When I first got mine I got it dialed in for through dovetails and finger joints and I guess because of the mess it makes put it down for several years. The early part of this year I was looking at buying a Incra System? That makes quick and easy box joints on the table saw and was going to get it until I said to myself why spend the money on a jig when I already have a jig that makes the same joint? So I broke out the PC and had to do the learning curve all over again but this time made a shop built dust collector for it that helped a lot with the mess. I made a lot of boxes and kept good notes especially on keeping grain orientation flowing around the box. With all of that said I haven't touched in around 4 months.
I just looked at Leigh's Super jig
Super Jig and according to the reviews its a lot easier to use than the other PC type jigs. Still you need to read and follow label directions. If I were getting it I would get the VRS dust control system that attaches to it. The bad part is is that it is pricey compared to other jigs.
I also looked at Leigh's RTJ400
RTJ400 . It is for the router table and if I had to do it all over again would likely get it but would watch some more video's and do some more research on it first. Didn't look at the price until now... $379. About the same price as the Super Jig with VRS Attachment.
That's my input. Let us know which way you go. Be safe and good luck.