you can check out at server discusions
SJSRO OLD
is the second best from your list IMO
lag is 2-3
traffic 1
cap 120 i think its real but it really sucks what are you gonna do with max 300 mastery lvl total?

are you going to have gap 20

skill cap 70 sucks
sp rate 30x
Swsro 2
Best server from your list since ecsro vip is not aded .It is p2p (pay to play)but they stoped selling accounts or what they sell activation codes or w/e
no lag at all tho
trafic is easy or populated I think
cap 105 i think from what i heard but if you want to be sure check out the server discusion thread
skill cap 100 I think you'd better ask FoulSoul
sp rate really don't know
but if i were you i would buy an ecsro vip account(8$,nice comunity blah blah) or swsro 2 account(from somewhere else lots of ppl selling accounts)