See if you can find an Ibanez AZ to try out. They’re fantastic guitars for the price and there’s a variety of pickup configurations and number of frets to choose from. Several of the Signature and Premium models fall in the $1000 to $1500 range.

Along with Tanaka, Yamada (山田) is also often used as a placeholder surname. It’s a comparably common name that’s also simple to read and write.

As for female placeholder given names, IMO the closest equivalent to Taro would probably be Hanako (花子). I’ve seen adverts that show sample credit cards or forms bearing these names.

For example, an ad for a Toyota financing promotion might feature the name Toyota Taro on the sample application form. Or in a Mitsubishi UFJ credit card ad, the happy-looking lady in the ad will be using a credit card that bears the name Mitsubishi Hanako.