Asacol worked great for me at the beginning and then it became more of something to keep the UC under control. Some have a reaction to Asacol, but Colazal and Lialda are do the same thing and may work better for others. I don't know much about Enbrel, but different inflammation meds usually treat different inflammatory conditions--for instance, having UC means you should not take Asprin or Ibuprofen, it would make things worse. Also, there is a good chance the Rheumathiod Arthritis was caused by your UC, which is something I noticed about 6 months before I was dx'd with UC.
Anyhow, welcome to the site and you should find a lot of useful information here.
Yet to go into remission, Flare-up since Aug 12th and still atempting to work in the midst of it
On Lialda (2/dy), probiotics, Oriental Medical Tea & Prescribed Diet, Greens+, Fish Oil