Using these servos on a club build (we ordered 50 of them for building Flitetest bloody Wonders) All I can say is impressed! Digital means the centering is great and the servos are fast and accurate. I had some older non-digital eflite servos ($20 servos) in my first one and they were soft and squishy under the same load and didn't want to hold center at speed. these are now the only servo that i will order for my park 370, 400, &450 projects.
a couple notes that have nothing to do with performance;
1)the white color means they hide better in the foamboard planes from flitetest.
2) thes servos are screwed together like larger servos, not held together with decals on the sides. (if you have ever accidentally pulled a servo apart while trying to emove it from a plane you'll know why this is good)
3) (this is really nit-picking and doesn't count as a gripe) the output gear has an even number of splines (20). because of this it can be slightly harder to place the servo horn in the perfect orientation on the servo. if you were to put a two sided servo horn on a servo for ailerons, for example, and it wasn't at quite the right angle, turning the servo horn 180 degrees with an odd number of splines usually splits the difference and helps during setup. as it is, you my be using subtrim on your radio to center the servo horn to your liking during setup.

These servos are worth the price. Good centering, fast, reliable. They are far better than HXT900 for nearly same price. Worth the investment anyway. Recommended product.

Awesome servos very strong

Very good and reliable servo

great price for a small digital servo, Work very well in the Flite test planes like the Bloody Baron. And I really like that they are white, they hide well in a foam core plane

Schlechte Servos.
Habe 3 davon in eine Galaxy eingebaut. Nach 10 Minuten Servozittern um den Nullpunkt.
Habe alle in mhevoller kleinarbeit wieder ausbauen mssen.
Sing zwar gnstig aber auch das sind sie nicht wert.

Unbeatable servo for this low price. It is fast, runs smooth, almost no gear slope and centering is almost perfect. I have about more than 30 of these servos in my EPP 3D planes up to 1m wingspan and I am really satisfied with the performance.

A good lightweight Servo, fast and approximately backlash-free. Low price and good for small models like parkflyers.

strong, light, never had one that didn't work. great value!

Ordered 4 of these and 2 have been build in as rudder servo in a sailboat. They are working very good. However the remaining 2 do not work, 1 is beeping and the other 1 does not respond at all. But hey..still good value for money. Would recomend them. (I am sailing at 6V which should be acceptable for these servo's)