Mercedes odometer correction: Obdstar X300M vs Digiprog 3

Universal odometer correction tools: Obdstar X300M and Digiprog 3, which is better for Mercedes-Benz to change km?
Here you go.

Obdstar x300m: http://www.chinacardiags.com/wholesale/obdstar-x300m-special-for-odometer-adjustment-and-obdii-26601.html
Digiprog 3: http://www.chinacardiags.com/wholesale/low-cost-v494-digiprog-iii-digiprog3-multi-languages-odometer-master-programmer-entire-kit-with-st01-5156.html
Obdstar X300M vs Digiprog 3
Obdstar X300M is better for Mercedes mileage change esp. for new Mercedes vehicles and those in the future. It is because Digiprog 3 stops update in version 4.94 (so it works for the old Mercedes only) while the team Obdstar is trying his best to update software for better support.
Look here:
Digiprog 3 4.94 Mercedes vehicle list
Obdstar X300M Mercedes car list
In detail...
Digiprog 3 4.94 Mercedes vehicle list
W176 new version
W204 new version Diag
w212 new version Diag
R172 Diag new version
R231 Diag new version
W212 Diag new version
W212 Face Lift
2014 Diag
R230 new version Diag
R172 Diag
176 Diag
R231 Diag
W246 Diag
117 Diag
CLA W117
W207 new version
W209 new version
W212
W166 Diag
W166
W204
212 Diag new version
W204 new Version DIAG
W203 Diag new version
R231 (SL 2012)
W176 (A Kl.
R230 Diag 2005-
G-Klasse W463 ML 164 DIAG new version
R171 DIAG new version
R230 2005- DIAG new version
CDI DPF REGEN
Obdstar X300M Mercedes V30.24 car list:
BENZ
GL Series
X164
ML Series
W164
R Series
W251
BENZM
A Series
W169
B Series
W245
C Series
W203(2007.04-)
W204
CLK Series
C207(E-COUPE)
W209
CLS Series
W218(2011-)
E Series
A207(E-CABRIO)
W211
W212
G Series
W463
GL Series
X164
GLK Series
X204
ML Series
W164
R Series
W251
SLC Series
R197
SLK Series
R171
BENZH
A Series
W169
W176
B Series
W245
W246
C Series
W203(2007.04-)
W204
W205
CLA Series
W117
CLK Series
C207(E-COUPE)
W209
CLS Series
W218(2011-)
E Series
A207(E-CABRIO)
W211
W212
G Series
W463
GL Series
X164
GLK Series
X204
ML Series
W164
W166
R Series
W251
S Series
W221
W222
C216
SL Series
R231
SLC Series
R197
SLK Series
R171
R172