Deetothevee - In my opinion over the years I have found that the speakers have a much larger impact on sound (especially when starting out). As you move up the speaker chain that is when amps pre and source will made the biggest sonic differences followed by cables.
Or do you think that different speakers would make just as much of an improvement as an upgraded amp?In my opinion the speakers will make a much bigger difference at your stage of the game. That being said I came real real close to upgrading the Bryston to a Naim Supernait. But in the end for me the Octave crushed both the Bryston and Naim. Last I haven't heard a NAD amp in last 20 years.