I hesitate to recommend this, because the last thing I want to do is drive up eBay prices, but the best flash ever made was Sunpak's 383 Super. No, it's not dedicated nor TTL. It's got tilt, swivel, a good light output, 3 auto settings, a full manual setting, and adjustable power all the way down to 1/16th. You can find AC adapters or battery packs for extra recycling speed, and it has a plugin for a PC cord. It's got ONE flash contact so it can't (potentially) confuse camera electronics. That means you can use it on any camera. And to top it off, it's got a low trigger voltage so it won't harm electronics of today's DSLRs or MILCs.