Imo I'd say the new bikes are better. Owned 449 and 511 now own a fc450 and yes a much better bike but different animal street legal vs dirt. I hate to say it but if you really want dependable and worry free I think the Japanese bikes are still better over ktm/husky. I just wish the jap bikes made more street legal dirt bikes like ktm/husky. Bang for your buck and reliable trouble free riding is what we all want.
Reliability vs performance is a question all bike buyers ask them selves when looking for this type of bike. Yes, the DRZ is a great bike but many forget that it was discontinued in Europe ages ago, and grabbing a used one isn't easy, or cheap! If it was possible to buy new DRZ's, or an upgraded model with fuel injection, many would buy them.
Also worth mentioning, DRZ's aren't performance machines. I would rather compair the DRZ to an oversized moped than to a Husky/Berg or KTM.
After only owning one Husky(TE511 2011), i would say i'm impressed. Living in a country where one day its +15C and sun, the next day -5C and 15cm snow, and using the bike every day for commuting (all year round), i've had little to no problems. The're not perfect machines, but the essentials are there, it always starts, and always gets me home, which is what counts. I expected more fuss and problems.
People complain about the maintenance, 'bu huu', it takes 30 min to do an oil change... The trade off for the performance, really can't complain. The problem is like earlier mentioned, so few japanese options in the offroad/Enduro segment available.
Want a reliable machine? Buy the Honda CRF250m, but then again, it's more of a moped than a bike, which is the main issue now days. Honda, make a low weight 500cc version that meets emission regulations and maybe, it would be considered an option to buy.