Celestron omni xlt 102 vs 120

I am seriously considering the Celestron omni XLT102. The 120 is $100 more. Will the difference make that much difference viewing faint objects. I have been a dob user from the start and have little experience with refractors. I would like to get used to an equatorial mount and have a smaller telescope for casual viewing and possibly some astrophotography.

Please advise.

James
I have a orion 120mm and have had a celestron 102. I like the 120 far better. There is a considerable amount of light difference.
The 120 is not much heavier and for $100 difference you get a lot more scope in my opinion.