I guess it's a toss up now. Used to be in 250 a good running 200gp had a shot at a podium. Now it seems Roper, Eric Pritchard, John Ruffo and Parker Heath make a lot of the 250 races... so it's a tough class now.
In ULWSV the only people running seem to be Marty Yannerilla and Turk...the rest of the grid seems to be full of bumps...so you'd probably have a better shot at a ULWSV podium these days. Problem is...ULWSV is also the bump class for 250gp.
I'm still bumping to 250 this year...since I want to continue to gauge my progress by the same competition.