I buy mine in a 100mg VG Base and find my DIY turns out much better, may sound ridiculous but I think its all very subject and there isn't one way that's better than the other it comes down to personal choice, VG Base is mine and I only but 250ml's at a time so I always have fresh Nic, I prefer Fresh Nic to old as well, when I see sales at ridiculously low prices on Nic I know whats up. Only 2 Nic suppliers that get my business is Extremevaping and Crystalclearvaping Both have outstanding Nic quality, high grade, clean, clear Nic. Just my 2 c