Has anybody tried the Vivitar DF-383? It appears to be a TTL version of the classic 283/285. Seems to be basic TTL and not some of the fancier features of a Nikon SB-series of flash, but does appear to be an affordable alternative that would be a step up from my 283/285 collection. Particularly interested if it has a HV connection for an external battery pack like the Quantum Turbo. From the description I've seen online it doesn't sound like it does.