Upvote:2
The Schengen rules are relatively clear, apply to the country which is your main destination (or the first visit in the case of multi-entry visas). This could be either the country you will visit longest or the one in which the primary purpose of the visit occurs. Part of the intention of the unified visa policy is to ensure there is no "easiest country" and prevent the kind of "visa shopping" you propose. See for example this similar question.
Upvote:2
Short stay visa statistics for 2017 are available here https://ec.europa.eu/home-affairs/sites/homeaffairs/files/what-we-do/policies/borders-and-visas/visa-policy/docs/2017-consulates-schengen-visa-stats.xlsx Five countries are listed as having refusal rates of around 1%, including Greece and Finland. Knowing this data wonβt help you if you were banned and your details entered into SIS, of course.