Mark Bass Traveler 102p vs. 151p

I recently purchased a Markbass TA 501 head and the Traveler 102p...I'm still slightly second guessing myself thinking that maybe I should have purchased the 151p instead but I'd like to hear some opinions.

The 102p has great mid range punch and seems easy to accommodate sound too...but I feel like may the 151 has a little more rumble to it. Both are at 8 ohms so I really don't think I'm going to get more juice out of one over the other.

any thoughts...suggestions?

For the record...mark bass really lets your bass sing like it's meant too...definitely worth the purchase.