I play vilegar (now I play DialgaChomp too). I have Gengar & Vileplume(of course), plus spiritomb. If you want to know more, look at my deck list (in my signature). I went to 2 battle roads. I came in 6th at both of them (one of my opponents had no trainers, supporters, or stadiums!!).
I ran (and still run) Tyranilock. I love it, has Tyranitar Prime, Mightyena (LA), and Umbreon (UD). You can play this deck two different ways. If your opponent plays SP, Arceus, or a Legend based deck, use Mightyena and Umbreon. This gets really annoying, lol. If your opponent just has high HP and tank Pokemon, take them out quick with T-Tar and you can stall with Mightyena or Umbreon if you are charging up T-Tar. I usually do 140-160 a turn with T-Tar. It's beast.
EDIT: PM me for a decklist if you'd like one.
I have played both Luxchomp (originally chose this because I got my hands on two cheap Luxray GL Lv. X's) and Vilegar (Changed to this because I tested it on Redshark and thought it was much funner than Luxchom). So far I have gone 5-5 in total from the two BR's I went to with the majority of my loses being caused by minor play mistakes that would have completely changed a games outcome. (Mistakes were due to me only actually playing pokemon for a couple months now)
I run Vilegar. I've played different Gengar decks since I start pokemon. I've tried other decks such as Luxape and Donphan, but I like Gengar the most. I plan on running a Lostgar deck once triumphant is released and I've already began testing with proxies and some of the japanese cards.
I started with Jumpluff this format, liked the build, but the meta was too random, and less SP focused(Although enough Sabelock should up first weekend), overall I finished 3-2 with it.
I switched to Abomasnow/Garchomp for the next weekend, going 6-0. Changed the list a little and finished 4th the next weekend at 4-2 (Losing to mirror and scizor in t4), overall 10-2 with Abomasnow/Garchomp.
I play steelix prime, went 2-2 at first battle roads lost one game due to all my 3 steelix being prized and lost the other one against scizor-blaziken my worst matchup. Placed second this weekend in a tournament going 3-1 with steelix again, losing against a blaziken-luxray-ERL deck with a heavy line of 2-2 blaziken being my worst enemy! Just finished building my Jumpluff Shaymin deck and my PluffPlume deck that I will take for the next tournament or battle roads and I am currently also working on a weavile lock deck.
I've been playing Charizard since the beginning of this season (five tournaments) making small changes here and there. My record in tournaments so far with it is 15-9 doesn't sound that good but I've made three top cuts with it so far, much better then I've done in the past. I really like the deck, and I've been using it ever since HGSS came out, switching to other decks once in a while.
I run Chenlock, which is a combo of Sableye SF, Blaziken FB LV.X, and Garchomp C LV.X, and uses disruption to lock your opponent while you snipe their field with Garchomp and attack their active with Blaziken. I also have used just plain Sablelock, with Honchkrow G instead of Blaziken (Article and decklist in signature), and Smearlock as I like to call it, which is Chenlock with Smeargle UD as a starter instead of Sableye. I also use Jumpluff, Infernozard, Magnelock, Raichu LV.X, Kecleon, and Wormadam. My record for 3 Battle Roads this season is 7-4 with Sablelock, with 1 of those losses being to a very sad donk (I had an excellent hand...), another one to VileGar (lost on time because the Judge took 15-20 minutes and we only got a 10 minute time extension, and I lost by 1 prize on time, with me being turn 0 ), and the other 2 were against the best person in BC, who never seems to lose at tourneys....
I play Palkiachomp, it uses Palkia G and Garchomp C as the main attackers, while it uses Mesprits (from LA) to power lock and tosses away anything I don't need with Palkia G X. So far it's gone great winning me 2 BR's going 3-0 at 1st BR's then 4-0 at the 2nd.
At the moment I have 10 different meta decks: Luxchomp, dialgachomp, jumpluff, kingra, steelix, Vilegar, Donphan, Champphan, Charizard, Sablelock. I usually use Luxchomp at BR's..though I used Jumpluff at one and went 3/2.
^You know that Lost World isn't in the set, right? Unless we get a filler set (what are the chances of that....), it comes out as a TSD, or it comes out in the BW set, we're not getting it.