Ok, lets divide this in two parts:
1.- Translation
Sorry to disagree: Tomar sol - Take sun - No sunbathing.
Tomar EL sol - Sunbathing
No one says "Tomar Sol" but "Tomar el Sol"
2.- Facts
First, TomarelSol.com is free if you still interested.
Second, even if using the pronoun EL is the correct spelling, the search engines offer way less results on this form.
Third, if you are REALLY willing to develop this, I recommend u just to get both domains and forwards one of them so you will catch both markets.
Conclussion
As raw value, i see TomarSol.com higher, high $xx low $xxx imo if not well developed, but I wouldnt understimate registering the correct spelling form and combining them.
Best of luck!
Eth.