Replying to Booter/flexon

well i was gonna get the ft booter but then had the amazing idea of just buying a new liner and putting it in the flexons i used for half of last season.. the bsl is the same as the booters i would but so i assume it is the same size unless their sizes measure different to their old ones for some reason but i was wanting newschoolers opinion on whether it be worth it to buy the booter for the extra flex or stick with the old ones and just put a new liner in it and if the liners will even fit in teh old ones.. soo opinons please