If you looking for a better bike, not that the Giant is a bad bike, but just forget about that one. The GT you have posted is a fully ridged 29R. Whole different type of riding style. You either swear by them, or swear at them. The GT is overall a more expensive bike than what you have now. But you might not like the ride it gives you. The real ? is, what is wrong with the Raliegh? Have you out grown it, is it failing and falling apart? It is a entry level bike, but not a bad bike by any means.