I do not think the Rams should take a QB at #1. I do not think the Rams should select a DT at #1 either. I do not think Suh will be a bust, however I do not think his impact on the Rams defense warrants #1 overall and the contract that comes with it.
I guess for me it boils down to the fact that the Rams scored 175 points all year, started Danny Amendola (persecuted Roy Williams would have been their leading WR with 2nd in receptions, 1st in yards, 1st in TDs) and the only person that threw more TDs than INTs was their kicker. Their offense is in shambles outside of a wearing down Jackson, they have thrown picks at defense for years and very few teams without a viable QB option will succeed. You don't give up so many points while scoring so few and not have needs across the board.
With that out of the way, IMO, they are better off trading down with a team like the 49ers for peanuts (I'll use the 2nd I mentioned earlier as an example). At 13, they may still have a shot at Bradford/Clausen and 2 selections at the top of 2. Those picks are value selections. If they drafted Bradford at 13, they could grab Gresham in 2; if they drafted Clausen they could package the picks and grab Tate. This would allow the young QBs to get acclimated to the NFL with players they are already familiar with. Please note, I am suggesting this is their course of action only that in moving down, even for little compensation, they have more flexibility in the draft.