i dunno if youv already picked, but whatever.
the brigade seems like a sick choice for you. from what iv heard, its a sick all mountain ski with damn fine park skills. seems to me like its a seth, just with roles reversed (to your liking too). the seth focuses more on all mountain while has some potential in the park. the brigade seems to even those factors out alot more due to weight, pop, and overall shape.
as far as the seths go, seems like your inbetween sizes. the 179 is going to be too short for a 6'1 park skier in my opinion, and even if it is perfect for some runs in the park, out west your going to get bogged down when you speed it up based on the length and softness. im 6 foot and wish i had the 189s instead of the 179s, and i ski no park. so, based on sizes, and probably your dedication to park, id lean away from the seth.
the ARV is a sick ski, definitly. the 185 would be a perfect size for you. i have a friend of similar size with the 185 ARV and both he and i love them. solid all mountain performer, specially in alaska, i really like it, seriously. cant say anything about the park, so you might want to try that out, i dunno, but their definitly light, and the size again is just about perfect, specially if you center mount them or maybe a little back. good park, but still wont render them useless in the west.
like veteran, im not a huge fan of the gun. kinda inbetween sizes again for your skiing. a 181 seems short for you, but i dunno. the 188s out of the question for park skiing. its soft, light, but i dunno, just a so so ski in my opinion.
RIP Doug Coombs