WE usggest you make a test.  Take two idnetical engine one equipped with ZIMO decoder and one equipped with any brand you like (ie, Massoth, Lenz, QSI,.... any) and you will see the difference.

Model:ZI-MX699KV
Weight:1 lbs
Availability:Ships in 4-8 weeks
$265.95
Model:ZI-MX696V
Weight:1 lbs
Availability:In Stock
$195.95
Model:ZI-MX696N
Weight:1 lbs
Availability:Available for order, Ships in 5-7 days
$105.00
Model:ZI-MS450R
Weight:1 lbs
Availability:In Stock
$102.95
Model:ZI-MS450
Weight:1 lbs
Availability:In Stock
$101.95
Model:ZI-MX645P22
Weight:0.5 lbs
Availability:In Stock
$99.95
Model:MS450P22
Weight:0.5 lbs
Availability:Ships in 2-3 weeks
$99.95