Amarc,

Regarding the steel verses aluminum question. Back when aluminum frames first came out they made for a pretty harsh ride compared to steel. I haven't ridden an aluminum frame in a long time so I can't say if that is still the case with todays bikes with their differerent tube diameters and shapes. My guess would be that your average steel frame will still provide a smoother ride (assuming it is using standard diameter tubing, geometry, etc, etc).

As far as the two bike you are looking at they appear to be very much entry level. If you have a very limited budget I would be more inclined to look at something used as you should be able to get something much better for that same cost.

What is your max budget?