TWO was more likely to result in an impulse buy, due to the perception of getting a better deal. The flip side is that it was also more likely to lead to disappointment if you missed that weeks offers, or couldn't afford the item that was on offer that week.
Not having TWO isn't going to be as exciting in the short-term perhaps, but is a better deal ultimately as you should always get the best price OcUK can negotiate on the item(s) you want.
Change is always met with scepticisim and suspicion it seems. I remember when Spie changed the forum look and feel and the resultant hue and outcry. Why not try it for a week or two and then feedback your thoughts?
Best price + no time limits = better deal imho.
P