How much money do you have to spend Mr. Smith?
If money isn't an issue, I would go with Fred's suggestion of Alpinestar Tech 6 or Tech 8 (they're both expensive...all pros use the Tech 8, but some think the 6 is more comfortable). If money is an issue, do what I did. I bought the MSR Rage boots (They're the same as the Alpinestar M-4), and they only cost about $160. They feel good, and I like them. I ride mostly trails, and I don't have any problems with them. Any cheaper boots don't provide very much protection. As for trials...I don't think you can buy boots that will work for both trails and trials. Hope that helped.