i 2nd the bx8a, i used to use them, they were quite good once you learned them, i had a $1000 and spent $500 on the bx8a and $500 on acoustic treatment(DIY Mineral Wool Panels, 18 x 4"x2'x4').
so the sub $1000 monitors can be very good and usefull, but only if you give more time to learning them to your ears and your room, with acoustic treatment you take the room factor out and makes things easier.