They can be expensive and you may suffer buyer's remorse, but my experience was that it goes away quick, after you start getting easily repeated results.
Over the years, I've been involved in a lot of discussions about sharpening. Those conversations almost always attract the arrogant types who insist one must learn to sharpen freehand and many of them TRIED to mock me for using jigs, but shut up when I challenged them to drop by my shop, or one like it, and prove their amazing muscle memory sharpening: (1) draw knives; (2) cleavers; (3) chisels that require various angles; (4) kitchen knives that require various angles; (5) lathe knives that require various angles; (6) axes; (7) lawn mower blades; (

band and table saw blades that require various angles; (9) different pocket knives that require various angles; (10) hunting knives; (11) brush chopping blades; (12) hoes; . . . .
The point is, no one is good at developing muscle memory for all but a few of the things mentioned. Too, all it takes is tipping the item you're sharpening a degree or two off the angle you want, and you'll be set back several minutes. Jigs help you avoid that.
I bit the bullet and bought an Edge Pro Sharpener about ten years back. Afterword, the buyer's remorse at having just gambled $200.00 hit hard, but, as noted, it went away quickly. For example, I was talking with my wife about cutting potatoes using knives I'd saw, liked and scored 2nd hand. It was almost like the blades were all but falling through them.
The truth was, we were those people who grew up in households that tossed knives in a drawer and let them fight it out for dominance. A battle they ALL lost.
We, to too much of a degree, had continued that tradition. Using a knife from that drawer meant pressing down hard and rocking back and forth until the potato SPLIT apart. Using sharp blades made us wonder if we were getting soft, on their way out, potatoes. Eventually, we figured out that the Edge Pro sharpened blades were just incomparably sharper.
Now, if a knife starts to show signs of little knifey hesitations, my wife asks me to tune it/them.
Be warned, being able to get all your blades to where they should be can create rabbit trails. For example, I started looking at pocket and kitchen knives with steels that would hold their edges even longer. Man what a different world that opened up. Love my old buck, but it needs sharpening ten times before my Spyderco Paramilitary II with 110 steel needs attention.
Then there is the "if the Edge Pro is good, can that other often talked of, far more expensive sharpener be better" thing. More specifically, I started lusting after the Wicked Edge sharpeners. Staring down that road, there was the problem of, which version. And the shortcomings they suffered that the Edge Pro didn't.
COINCIDENTALLY, Wicked Edge came out with a prototype at the same time I was building my own version designed to overcome the problem of the stones fighting with the clamp, when sharpening some blades (mine clamps the handle, instead (and I had most the materials sitting around in my shop, so only had to buy the vice (handle clamp) the stones and the rods). I bought it for about the same prices as I paid for the Edge Pro.
The Wicked Edge has become another favorite, but remains alongside the Edge Pro and not in front of it, for the reasons stated.