I've heard good things about m-seeds, and by looking at the site they are good value for money. Never used the Planet Skunk but a few people on here say they aren't very good.
I've heard great things about the entire Bomb seeds range of seeds. I've personally grown out THC Bomb and loved growing it but the smoke was a little too strong for me. I'm a little older and can't handle the stronger strains anymore.
Good luck with the grow.
M-seeds have always been good for me. Sometimes the beans do look slightly different in size and shape but when grown i've never seen any difference in plant size, strength or genetic make-up.
Their stealth is one of the best out there although i'm not sure posting photo's of how they ship the...
You won't have any problems from m-seeds. I've always had great results with there strains. I haven't grown any of the strains you've bought but have had great results with THC Bomb from them.
What's your setup for the grow? Depending on your space and set up will dictate what you grow first...