Hi speedmaster,
Take them both and talk to a neighbor for a little space in his yard :)
rdb is a huge grower and dalmatie a small grower, if space or shading is a problem for you, take the dalmatie .
That is if light colored figs are ok for you. If you prefer the ones on the dark side, take the rdb .
Or, last choice,the best IMO, plant them both in the same hole at 50cm or 2 feet of distance. Let them fruit for 3 years and call the jury for sentencing one to relocation or death .
This way, you won't have the regrets of missing the best strain .
Good luck ! ... I'm still hunting for one free spot in my garden for a another fig tree that I have potted at the moment ... Life is hard on us :) .