You will notice the difference for sure. I have the 625,645,925 and the 5925, 5945 all MG. The 625 is use in my 'backup' 1/10th onroad electric, the 925 i use in my main car, the reason is the 925 and 5925 (digi) are so much faster responsed. Makes the car very very agile. I love the 925 in my TA-04. I use the 645 and the 5945 for throttle and brake servos on nitro cars. IMHO, the 925 is well worth the money.