Buying my first Subwoofer

[fozzythebear]

I currently have two Sierra-1s and one Sierra-1 center, I've been using them for 10 years now, they are wonderful!

Upgrading from a Denon AVR-S540BT (70W/channel) to a used Pioneer ELITE SC-27 (140W/channel) this weekend. I've never owned a subwoofer before, looking at my price range it is either: L12, LV12F, or LVX12

My living room is wide open with many doorways and hallways. I'm leaning towards the L12 just so I don't have to worry about vents, but would the extra power of the LVX12 be worth it for my setup?

I'm thinking because of the added power of the new receiver the L12 should be plenty for me. Thoughts?


e: also being a audio novice, I noticed the Pioneer just has one RCA output for the subwoofer, is that all it takes to connect to a L12?