Hi DB,
and welcome to UK420 mate.
Yes it can matter for a couple of reasons.For starters there are seedbanks like Nirvana who are very cheap and as far as I know don't produce other peeps strains under licence which must mean they are offering F2's of certain strains that are hybrid and not true breeding which means their offspring are not fully like the plants produced by the original breeders.
Also there is more than one Bubblegum strain,3 I think,which are from reputable breeders but they've tinkered with the Bubblegum so you may prefer one over another.They are all good but its down to personal preference so don't be totally swayed by personal recommendations but do take them into overall account.
It's tha same with Skunk #1 but most peeps use Sensi Seedbanks version as it's cheap and many report it's good,grown it myself and I give it a thumbs up but as I say,the proof of the puddin' is in the eating.