My D series was typically good enough for form registration, but there are some plastic parts in the paper path that wear fast and mess with feeding and registration. My D125 was run into the ground at 7 million clicks last year when we upgraded, which as a bit underwhelming.
Also...FujiXerox has a new B9125 using EA toner in Asia that looks to replace the old D125, but isn't out in North America yet. I'd recommend waiting for the B Series or asking for a big discount on a D series. The B series looks like it uses more robust feed and finishing accessories from the Versant and Irridesse presses.
How many clicks are you planning monthly?