Raintree has a new 'everbearing' blackberry. I don't think you're going to be able to get away from the robust growth of blackberries unless you go to the dewberry types like the native trailing blackberry.

Have a look at Raintree's offering, they have quite an assortment of cane fruits this year.

Yes but they don't tell me what I want to know. I checked them first before coming here.

I Recently attended an OSU class on berry cultivation. Even though I don't want to grow them, the information was very interesting and too extensive to print here: at least 20 cultivars of raspberries and about the same for blackberries.

For a plethora of information, download the following Oregon State University publications: EC 1303 and EC1306.
Blackberries and raspberries respectively. Just google "osu 1303" and "osu 1306".

You will be the berries!!

Good luck.

Here is a link that might be useful: OSU