Yesterday Dreamhost announced new SSD storage for shared hosting. All new customer will get it. Old customers can request to be moved on a new server with SSD storage. I've asked so for my account and I'll let know how it goes.
My sites are hosted on Dreamhost since 2003 and even if I'm not been happy for some things (lack of PHP updates for a long time, now fixed) now they started to amaze me again and I'm happy to be here