The DCON is going to be your best friend for budget bass, I promise. I've bought four of them over the years, a 12" for my sister's Durango years ago, two 10"s for my wife's Traverse last year, and just last week a 12" for behind the seat in my son's pickup truck. I didn't buy more of them after I got the one for my sister because they're a budget friendly sub. I bought more of them for my own builds because the one I got for my sister has hands down been one of the best subs I've ever played with and deservingly so ESPECIALLY for what it costs.
It's going to perform fine on the power you have in a sealed enclosure and in the future if you decide to upgrade your power a little and either build/have built a nice ported enclosure for it you'll never believe it's the same sub. I've told people in the past that if I had known what the DCON was capable of I would have bought two of them and a smaller amp for my minivan (which has two Fi 12" Q's and a Sundown SAZ-2000D $1200+ worth of equipment) and saved myself a ton of money, and I meant every word of it. Don't get me wrong, the Q's and the Sundown amp combo are absolutely unreal and honestly one of the best buys in audio equipment I've ever made over the years but I'm positive I would have been every bit as happy with DCON's in their place and put the money toward other things.