If the Sun will suit you the best for your type of needs, buy the thing! i am sure there are "better' built boats out there per say. But then again, what are you going to do with it? it may very well be built to the specs etc you need, spouse if there is one likes etc.
A number of folks on here bash the not sure I want to say it this way "entry level" or coastal cruiser style boats.......but they serve a purpose! many like myself, like my 85 Arcadia, warts and all. I like JP find my boat needs a reef at about 15 knots depending upon the headsail I have up. The 142 yes at 15knots, the 110 I can go to 20-22 before reefing!
Yes there are many on the owner site that post, I think I have seen JP on there, Zanshin another whom posts here posts there, as do I using my name vs handle here.
As Alex mentioned, the three you are looking at, all have positives, all have negatives, none do everything well! So choose your poison per your needs, do not look back, and enjoy the boat!
On this side of the Atlantic, we pretty much have Catilina, Hunter, and MacGregor for 20-25' TS style boats, I think if you put all 6 next to ea other, all would have positives and negatives. I am remembering one other, but the name escapes me for trailering too!
If you by the sun, welcome to the Jeanneau owners group! Sends some pics to Malcolm on the JO site!
Marty