I would think in terms of performance, BK is better.
But whether does it deserves the price delta....
Esp the price delta can get me a MP40W pump
Did some simple calculation:
Assume price difference of $550 between the 2 (after discount )
New electrical tariff of $0.3045/kwh
AP701 using 1260 pump (65w) and needs feed pump (say 10w AB1000)
Total power is 75w vs SM200 using 35w.
Every day, AP701 would consume 40/1000 x 24 x $0.3045 =~ $0.30
To be on par in cost would need (550/0.30)/365 = 5 years!!