Burgon & Ball are a good make. The ones you are looking at j&G are for shearing where you need to take long sweeps, the stumpy ones are daggers for close, awkward work. The blades will cross over if you let them open too much between snips - very annoying
Another consideration is the top end, where you can have different configurations of the 'spring' - this is personal choice, depending on your hand size and strength, so best to try them out before buying if you can find some for sale locally.