Take it for what it is worth, here is what happened to me.
I was furloughed from US Airways in 2002. I researched the same thing.
Which type would prove most useful? NC was "only" paying $4000.00 toward retraining when other states were paying up to $9000.00. So I looked at what gave me the type, without the most out of pocket. I chose the CE-500 type. I looked at the Lear and Hawker. There were 3 factors in my decision. 1. There were alot of Citations in and around where I lived. 2. That rating covers a range of Citations. I forget all now but I think the 500, ultra, bravo & 5, cant remember, so don't "quote" me. 3. One of the most important, COST. I found a company in Carlsbad, CA that did the rating in the aircraft, in 5 days and cost about $5500 at the time. I think it was Flight Crew International. Make sure you have your game on, because it was a fast, water through the fire hose, course.
I know what some will say. How can you get a type in 5 days? Well, it worked for me. Now let me tell you "the rest of the story".
I have a buddy that flies for a company near me that flies Excels. When I got back, he told his boss I have a CE-500 type. His boss is now interested in using me for contract work. (I had been trying to get contract work with them for almost a year, but to no avail.) Mind you, the Exel has nothing to do with the 500, a little close, but not really. I have alot of jet time as well, so this might have helped. This then led me to my current job where I started out flying Excels, because of the experience. The current job typed me in the Excel.
So, all this worked out for me. As they say, "your mileage may vary", but I personally think the Citation type is worth it. Look to see what flies the most around the area.
Good luck.