If the OP is concerned about the price on an ESEE 5 @ $150 then a GSO 4.1 @ $219 may not work out. Looks like a great knife but that is a lot to pay, especially if price is a determining factor in the purchase decision. The ESEE 4 at $113 will come with an awesome sheath, incredible warranty, molle locks, and a molle backing. My 4 has a great feeling handle, but that is a personal preference issue. I have never held a 4.1. Again, if price is a major concern BKT would be the way to go. If you have no budget, the options are endless, why not get a Busse TGLB. The GSO 4.1 is another option but I think an ESEE 4 or 6 would be the way I would go (and have). For the money, ESEE is hard to beat.