Which telescope would be better with a DSLR?
Both of these look OK to me. The biggest plus in the Omegon looks like the extra 10mm. If you're on a budget, taking a cheaper refractor and later taking a decent budget tracker (e.g. SkyTracker Pro) is a good move. Gradually building up your set of gear is key. Good luck!

ps. 
Don't think you're going to take "budget photos" because you're on budget gear. Good amateur astropics don't necessarily come from people with the best gear.