Honestly any boot is the best as long as they fit well and they give u a good grip of the surface ur playing on. For forwards on soft ground normally u should ideally use boots with 8 studs as they give better grip. adidas had "flanker" and "regulate" which was very favored by a lot of forwards but now its a whole new ball game. However there is a new boot that is out one that is dedicated and purposefully made for forwards !!! Read the above link and m sure u should be more that happy to buy these boots.
if youre a foward then use Adidas Regulate MID, better ankle support so it doesnt feel like your foot is about to slip off when scrummaging or rucking
Any boot with studs are good, especially in the 2nd row. Look at www.lovellrugby.co.uk they have all your standard boots but specially designed for rugby (studs) also do worldwide delivery
Take a look at the Canterbury range, they're reasonably priced and pretty reliable, in my experience. Good range/choice here too:
