I can speak from a little firsthand knowledge. I have a ladyfriend that owns one. I believe its a 2002, before they called it a C50. I think that designates the FI but I'm not sure. Hers is called a Volusia Intruder (no C50 on the sideplate) but I have seen the C50 and it looks identical. The same exterior parts etc. Her's is a full dresser. She rides in our group and lives fairly close to me and I have gotten to know the bike pretty well. It is very reliable. It isn't fast, but it is definitely a good shorthaul bike that you can put lots of stuff in if its dressed out. She has had zero troubles with it except for a speedo sensor that quit for a hundred miles or so and then started working again and has been ever since.
Recently the group did a 4 hour run all on fairly open roads in the Fla heat which was rated at 104 heat index that day. The air here is thick and humid in our summers. We rode at a pretty consistent 80 on the interstate. At about hour 3 she pulled over signaling distress. I doubled back and she said she had an overtemp light come on and than when she was letting off and pulling over it went out. We checked it all out and found things seemed to be in order as far as fan etc working. Started it up and it did not return. She was a bit worried about it so I took the bike for the next hour from there. I surmised that the heat and the sustained speed was simply too much for the bikes cooling system. 80 is about all it has for speed and that is working it at the higher end of what it is made for and the cooling simply wasn't up to the task.
I rode it for about 2 hours from there. Never went over 75. Never showed OT again. The transmission is clunky but solid. It goes in gear you just have to tell it to with your toe. I would certainly recommend the bike for a low end cruiser for around town and short hauls. It doesn't have the torque of the bigger cubes, but if you don't flog it, it runs all day and night without complaints. I have ridden it a few times since. Never a problem and I must admit it is pretty comfortable to ride. She is looking to step up to something bigger however because she wants to be able to go cross country on the loing haul and not have worries, and she likes to keep up with bigger bikes...LOL. She rode my cruiser (a V-4 Magna) in that ride when we swapped bikes and she LOVES the extra power.
I have driven it around town and over to Orlando with her on the back and have zero issues with the bike. It ain't ever going to be a 109 or a V-4 like mine but it is a pretty bulletproof little workhorse.
The C50 comes in larger displacemets. Identical bikes just bigger cubes. I think it is a C90. I don't know if there is a C75 or not. I think these are good value bikes.
I recently was at my mechanics shop. There was a brand new C50 with like 200 miles on it that had been sitting a year under cover. I asked Paul the owner of the shop what was up. Well an older gentleman had bought it and dropped it in his driveway and broke a mirror and a turn signal off and got scared of it. He kept it for a year and decided to sell it. I asked Paul how much he wanted as is (dirty from sitting and like $200 damage). Paul called him and said he would take 4200. I seriously thought about it at that price. But I already have a cruiser so I didn't pursue it. It was like new.