Sim Audio makes excellent gear but can be pricy when bought new. Before I bought my Bryston 4B-ST I did audition the W-5 and loved it - even more than my 4B but it was not worth (to me) double the cost - it wasn't twice the amp for twice the dollars - that concept of diminishing returns and all...
I would offer as an alternative to the big Sim 5 channel amp is a Bryston 6B-ST up front for the 3 front channels and a 4B-ST for the rears. You may get a good deal on a new 6B and 4B amps can be bought here for about $1400. The 6B has reported sonics than the 4B so I would use it for the mains so you can maximize your 2 channel listening. Not sure how the dollar amounts would shake out though...
I would offer as an alternative to the big Sim 5 channel amp is a Bryston 6B-ST up front for the 3 front channels and a 4B-ST for the rears. You may get a good deal on a new 6B and 4B amps can be bought here for about $1400. The 6B has reported sonics than the 4B so I would use it for the mains so you can maximize your 2 channel listening. Not sure how the dollar amounts would shake out though...