Amp for nee LRS Maggies

Well for the $1500 budget you can get a pair if Vidars and run them as monoblocks. That is likely your best bang for the buck given the budget. You may be able to get them for less on the secondary market if you can find them. With the money you save get the Mike Powell Maggie instant upgrade which costs only about $79. Dig around and find another $270-$355 for MyeStands. You will be please at the difference. 

Before you buy any subwoofers my advice is to first put the LRS pair on MyeStands. Then give them several or more listening sessions. If you think further improvement is needed then get and install the Mike Powell Maggie instant upgrade. Listen some more. If you still need more bass then go buy a sealed subwoofer or two.