meade ETX125 v Helios 5.1" reflector

I hope this post isnt off topic but could could one answer my question .

The aperture off the Etx is 125mm and of the newt 130mm the Meade etx which
im getting hopefully this week is a thousend and a bit pounds.
My newt cost 200 pounds .
Ive been advised not to buy the Etx 125 as the results from my reflector
would be better as it has a bigger, if only slight aperture .
So is this true ? im confused !
I also own an Etx70, now ive only had it a couple of weeks but the results
from that seem much better than from the reflector.

Please Help !