Infinite Plus(Formerly known as Enhanced Vanilla) is a pack that keeps that vanilla aspect but a little harder with baby mobs and also easy with plenty of blocks to build if you a good builder.

Mods:

Smooth Font (by bre2el)
Just Enough Resources (JER) (by Way2muchnoise)
Hwyla (by TehNut)
Steve's Carts Reborn (by modmuss50)
Colossal Chests (by kroeser)
Headcrumbs (by ganymedes01)
Morpheus (by Quetzi)
SecretRoomsMod (by AbrarSyed)
Reborn Core (by modmuss50)
MrTJPCore (by Mr_TJP)
ArmorPlus (by sokratis12GR)
Ender Storage 1.8.+ (by covers1624)
Backpacks (by Eydamos)
ComputerCraft (by dantwohundred)
Project Red - Integration (by Mr_TJP)
Project Red - Lighting (by Mr_TJP)
Project Red - Mechanical (by Mr_TJP)
iChunUtil (by iChun)
Mob Dismemberment (by iChun)
Forestry (by SirSengir)
CraftPresence (by cdagaming)
Portal Gun (by iChun)
SimpleHarvest (by TehNut)
Pam's HarvestCraft (by MatrexsVigil)
NetherEx (by LogicTechCorp)
TheDragonLib (by sokratis12GR)
Waila Harvestability (by squeek502)
Chickens (by SetyCz)
BiblioCraft (by JDSinclair)
Chisel (by tterrag1098)
Mapwriter 2 (by VectronDiablon)
MysticalLib (by epicsquid319)
ConnectedTexturesMod (by tterrag1098)
Custom Main Menu (by lumien231)
Mantle (by mDiyo)
Chance Cubes (by turkey2349)
Inventory Tweaks (by Kobata)
Biomes O' Plenty (by Glitchfiend)
Resource Loader (by lumien231)
Tinkers' Tool Leveling (by bonusboni)
SplashAnimation (by asiekierka)
Roost (by timrwood)
Project Red - Base (by Mr_TJP)
OreLib (by OreCruncher)
Iron Backpacks (by gr8pefish)
Blockcraftery (by epicsquid319)
Just Enough Items (JEI) (by mezz)
Iron Chests (by progwml6)
Translocators 1.8.+ (by covers1624)
BetterFps (by Guichaguri)
LibraryEx (by LogicTechCorp)
RadixCore (by WildBamaBoy)
OpenModsLib (by OpenMods)
Mystical Agriculture (by BlakeBr0)
Baby Mobs (by Furgl)
Chameleon (by jaquadro)
Chicken Chunks 1.8.+ (by covers1624)
Hatchery (by GenDeathrow)
Cyclops Core (by kroeser)
Mouse Tweaks (by YaLTeR97)
Dynamic Surroundings (by OreCruncher)
Storage Drawers (by jaquadro)
Clumps (by jaredlll08)
Chisels & Bits (by AlgorithmX2)
Mike Dongles (by MrAmericanMike)
Cucumber Library (by BlakeBr0)
CodeChicken Lib 1.8.+ (by covers1624)
Ceramics (by KnightMiner)
MalisisDoors (by Ordinastie)
Forge MultiPart CBE (by covers1624)
MalisisCore (by Ordinastie)
Realistic Item Drops (by Funwayguy)
Everyone Poops - Dung Fertilizer (by Clownvin)
Uppers (by Vadis365)
Tinkers Construct (by mDiyo)
The Lost Cities (by McJty)

Infinite Plus

ArmorPlus

Baby Mobs

Backpacks

BetterFps

BiblioCraft

Biomes O' Plenty

Blockcraftery

CB Multipart

Ceramics

Chameleon

Chance Cubes

Chicken Chunks 1.8.+

Chickens

Chisel

Chisels & Bits - For Forge

Clumps

CodeChicken Lib 1.8.+

Colossal Chests

ComputerCraft

ConnectedTexturesMod