I do like otx 3, i changed to it about 3 months ago, before I used for years tfs 0.4.
If you search in forum you'll see a lot of different opinion between TFS 1.3 and OTX3, they are quite similar.
I think you should choose one of those, the new stuffs nowadays are based on tfs 1.3 and you have more support.
To me the otx is doing a great job, I had no erros until now.