Entering Block Format
 

If you were just starting to play block format, which start would you chose
Set 27 Pain or Set 25 Ino-Shika-Cho?

Pain solely cause it stays in rotation longer.

depends what deck you want to play

well i dont want to play something straight line meta, but to be honest it doesnt matter to me which one will stay in rotation longer, my plan is to by two starters of either the pain or the earth and make a deck just out of those cards. so i guess which ever one will be more competitive and more fun to play around with

get one of each

Its personal preference.
If you get I-S-C starter, buy some of sets 27 and 26. Make an ino-shika-cho deck with power of trio tutor, mental power battles up the arse, and maybe tree spam as a back up condition/mirror match victory condition.

If you get void pain it's pretty much good enough out the box. In fact, you could pick up too and boom. Fully decent deck. however you could always run that deck and use the promo pain instead. Also pick up some of sets 23 and 24 since they have decent rinnegan user support. (also a Nagato from this set.)

Besides this advice, the choice is up to you.

well when will set 25 rotate out of rotation

After Gencon this year.

after Gencon (august or september)

i am by no means asking you guys to give me a full deck list but im thinking a mental power deck would be so much more fun tht straight line void, if i posted a general outline or even didnt could everyone help me piece together this deck using ONLY two earth starter