Cheap phones at the top of any list is not a surprise (iPhone 5s beat Galaxy Trend only on one operator, Sonera). For high-end DNA currently offers also Lumia 1020, Lumia 1520, Galaxy S4 Active, Galaxy Note 3 and LG G2. But HTC devices are missing from DNA's selection.

With max. 36 month installment plans (unlocked & without a mobile subscription if preferred) all kinds of phones are quite affordable nowadays. For example Jolla would be 11 eur/month (36x11 = 396 eur, you actually save 3 euros by paying in installments!).

I think Elisa sells a bit more Lumias than DNA, especially to business & enterprise customers.