I went through this two or three years ago. After many questions and suggestions of which type and whether to buy one or not I settled on a Parker KarryKrimp. Lisa Lyons has had this one and the "bottle jack" type and told me her guys liked the Parker better. I bought it on her recommendation. I found mine on ebay. It was brand new and I got it for $650. It came with dies from 1/4" to 1", a manual pump, and a black "pusher" plate. The only thing missing was instructions and the "silver" pusher. It was no trouble to figure out how to use it and the place where I get my fittings sold me a used silver pusher for $25. I have 17 SS bays and 7 autos so I am always in need of a hose and have not regretted buying this thing for one minute. I did tire of the manual pump and bought an air powered one last year. Now I don't dread it when I need to make several hoses at one time, especially the larger diameter ones. I use the blue goodyear 3/8" HP hose running to my bays as well. I also make my own brush hoses with it. I just crimp the HP fittings on the polybraid or pliovic hose. It's not made for that, but works great. I also like the fact that I can use up a hose that may just be damaged on the end or one that I had made up for a piece of equipment I no longer have. You can lop off one end and have a new hose made up for the cost of one fitting.
I buy a lot of my fittings from Universal Hose and fittings in Farmville, VA. They are very knowledgeable and accommodating. They also seem to have a lot of used equipment. Check out ebay or give them a call.