Can't advise you on 'Takion Blue' but I have a white one (not Takion series although there is a white form of it, so the one I have is likely taller) to plant. Deer and rabbits are supposed not to like it--I hope they read the same web sites.

The RHS listing says that "Pritchard's" is C. lactiflora. It tends to be tall, three to four feet in favorable conditions.

I did have a Takion Blue at my previous house and was pleased. It is NOT the tall graceful bellflower. it is shorter. I'm not sure what it's "claim to fame" is, but it was one of the first plants I purchased. I deadheaded continuously and it bloomed well into fall. Now i would not spend that much time deadheading one plant, but as a new gardener it was fun. Color is normal, but height is smaller and stems are very upright. Other than height, I remember color as being normal. Possibly flowers might have been bigger? (not sure). It will not self-seed. Probably sterile.

I would say it is definitely worth having the two different varieties of campanula. I am growing 'Prichard's Variety' for the first time this year and I am expecting smaller flowers on larger plants while my persicifolia will have larger flowers on a smaller plant. I do have a problem with rabbits nibbling on the latter, but they are coming along despite that. I grow a number of campanula and love them all.

Nice! The Takion did have such large flowers, but I must admit I love the graceful bendings of the 3' tall variety. Good choice for your garden and wallet. My only tall standard bellflowers were grown from seed, and they are in the crappiest junk neglected unmulched soil ever, and still surprise me with blooms, both blue and white. They survived the disastrous winter of 2018-19 and don't seem to mind abuse. So dependable!

I have the common white and blue peach leafed bellflowers and they are somewhat invasive self seeders. Easy enough to pull out though. Unlike creeping bellflower, which is a complete scourge.

A great favorite. Have the larger bloomed 'Telham Beauty' from seed. Super easy and liable to live 20 years. Also the weaker, smaller flowered, un-named white.