I think Sloan Thomas will be fighting for the #3 WR spot in 2005.
The coaches have also been really impressed with Thomas. Armstrong has the advantage of playing for a year in the Texans system, and that should help him in competing against Thomas for the #4 spot this year. However, Thomas probably has the advantage in speed and overall physical talent, plus he is pretty intelligent. If Bradford doesn't return in 2005, I see Thomas as a strong possibility for the #3 WR spot as a downfield threat. Remember that Thomas had the same 40 time as Roy Williams.