I noticed you have a Ventura on your list. I came across one of those last week that was a real nice sounding guitar for its pedigree. This one was from the early 70's and its tuning was rock solid. Here's some pics. it really compared favorably with my '73 Takamine which is my main beater.
My Ventura is a MJ (mini Jumbo) body and spruce over mahogany wood combo. I bought it in 2002 or 03 from a small music shop in Pueblo, CO. She has a great sound for such an inexpensive guitar, and she is my main beater (the one I have flown with and use at the campfire for anywhere I don't want to risk my Taylors getting mistreated). My teenage son has been playing her for the last 2 years and he has worn the frets down so bad that half the notes he tries to play just buzz.
I had a Fishman electronics system put in right when I bought her (that cost more than the guitar did) and I've played her plugged in an unplugged and greatly enjoy both. I don't see many Venturas out there new or used, so I don't know much abt who or how or where they are mfg'd, but I have loved my cheap little Ventura for 10 years now. Yours looks very nice too. You have a nice list of guitars there!
I still would love to have the 915ce!!
Here are some pics of my Ventura MJ...