I was planning to go with F-4 at one point (not cheap) so I decided to go with the following which turns out is a Slipstreamer. I have it 1 1/2 years now no problems works well, I got the sweptback Tusla style. My brother has a Tulsa & the Slipstreamer isn't the same quality but it isn't bad & I'm pleased with it.. The 2nd link is for the F-4, they have a rebate going on now & if you join Wingstuffs VIP membership you get a further discount. Hope this info helps.