I found on average more Soil coins using less resources solo mining versus pool mining
Pool mining
Soil coins found: 366
date: 07/17/2017
Speed: 110Mhs 
http://soil.miners-zone.net/#/account/0xc96dee0c5a2290f10c0afc104ddf77df3af321c7/payouts



Solo mining
Soil coins found: 313
date: 07/20/2017
Speed: 53Mhs 
http://178.62.133.174:9001/#/address/0xC96dEE0c5A2290f10C0afc104dDf77dF3Af321C7