Mono block suggestions

I am in the process of upgrading my amplifier(actually adding my 6th and 7th channel)the last 2 channels will act as my fronts for high performance 2 channel. Because of a lack of space in my component stand it would be very convenient to upgrade to mono blocks,and sit them right next to the front speakers. I have a 5 channel 125 watt amp. I would like to find 100-150 watt mono's. I am interested in the Pass Aleph 2's. Can I get any feed back on these,and also can any one recommend any other mono's that would fall in this range. I don't want to spend more than 2500.00(used) I'm asking for other recommendations because I'm not sure I can touch the Pass Aleph's for 2500.00 or even 3K. My front speakers are Martin Logan Clarity's. 2 channel sound now with the Acurus 125X5 is amazing.(I am also using the new Martin Logan Sub) Since I need 2 more channels for eventual 7.1,I want that final staple for my system. I would appreciate any suggestions. BTW-I'm limiting my search to solid state. Thanks