I'd give that a try then if it were me.I'm 99% sure you can use an MS9-29 chassis on an E31s tube/yoke combination. If you primarily will be playing JAMMA boards, that may be a good option. I do not have a lot of good things to say about the Rodotron 666A / Wei-Ya / Whatever Makvision tried to call it / etc.
No personal experience with Rodotron 666A / Wei-Ya here, but grantspain on AO said they're easy to repair at least.