Man... I am really on the fence with MS Moon Knight Omnibus, vol. 2. I got the first volume because it has Chuck Dixon issues in it. I really liked Chuck Dixon's Nightwing run back in the day so i still follow Chuck Dixon around, but MS MK Omni, vol. 2 has no Chuck Dixon issues in it and i have never heard anything positive about it from anyone who read it... :/
On the one side, completism kicks in and i am like just grab the vol. 2, but on the other side, i am like you can really get something, you can enjoy more with that money, you know (to myself lol)
to be a completist or not to be a completist, this is what is all about.
Same goes for X-Treme X-Men, vol. 2. I hear nothing positive about it, but for some reason i have always wanted to read X-Treme X-Men, eversince i learned about its existince... lol I will get Wolverine Omnibus, vol. 5 eventually no matter what because Wolverine is my favorite Marvel Charater, that is why i get every Wolverine Omnibus.
Ultimate X-Men has mixed word of mouth around it. Some people like it and some people find it mediocre. I have always wanted to read all of Ultimate X-Men ever since first 12 issues of it or something were published in Turkish in Turkiye in 2002 or something.