I've seen a great deal of discussion in various audio forums on the topic of subwoofer connections, and would like some advice from anyone here with an opinion. What subwoofer connections are you finding work best, the low level line out from the receiver to the sub, or the high level speaker wire connection (of which there seems to be a few different variations)? User manuals seem pretty straightforward on this issue, but there is SO much debate on this topic in different forums. Being new to the HT game, I'm looking to benefit from others' experience. Thanks!