In terms of weight and size, you'll hardly realise you're holding a machine with the FliteV2 whereas the Gen8 is quite sizeable for a rotary and much nearer coil weight. Both machines are very adjustable. The softness achievable with a FliteV2, the 3mm cam and the soft push rod has to be seen to be believed. Put the 4.5mm cam in with the hard push rod and you've got yourself an awesome liner. As you can probably tell, i am a FliteV2 user.