I recently purchased half hoods from both Thundersport and Soft Bits (don't ask!). As Soft Bits are local to me I have always supported their products and had one of the original HH which I sold on to a club member and its still going strong. The SB one has straight(ish) sides and reflective strips on the curve of the roll bar. It uses two 'Y' shaped straps at the rear as opposed to the single one used by TS. They also employ directional studs for the side straps. I have seen many variations of the male stud arrangement - Some piggyback onto the existing tonneau studs and others fit a dedicated one straight into the bodywork. The seam that runs inside across the roll bar is better protected to avoid chaffing the powder coating. The Thundersport version drops down at the sides and follows the contour of the door which looks neater in my opinion. It appears to gives marginally better cover behind the seats and to the rear, however, how effective this is I couldn't say. I don't like the side strap fixing method which uses a large eyelet that fits under the roll bar bolt and is a permanent fixture. The roll bar seam is exposed and may chafe after a while. Overall, I'm afraid to say I prefer the TS version in Mohair (similar to SB canvas I believe) with a couple of mods. Firstly, I asked them to supply the side straps without the eyelet and I fitted the directional stud arrangement to the redundant hood stick mounting lugs. Secondly, I glued a felt strip over the seam inside to stop the chaffing.