I take it you're looking for a tenor? Of those that you mentioned, I would highly recommend the Yamaha YTS 475, or for a couple hundred more, the YTS 62. These horns are built very well. The sound is fairly neutral. Depending on the mouthpiece and set-up they can sound great on jazz or legit. The YTS 62 is considered an intermediate-pro level horn with a lot of pro features. The Keilwerth ST 90 is a good student-intermediate level horn. They're made to the same specifications as the Keilwerth SX 90, only by Jupiter, and without the SX 90's finess (engravings, real pearl inlays, higher quality pads, etc.) It's not an SX-90 in other words, but the 2 share the same basic design and many pro features. The LA Sax models vary considerably. I have tried some that I thought played very well and others that didn't. They heavily lacquer a lot of their models which effects the resonation and sound to an extent. I also think they have some quality control issues they need to work on. I'm really not to familiar with Amati. From everything I have heard, they are a decent sax, but I haven't played one yet. Of those you mentioned, I think the Yamaha is probably the best bang for the buck, but I would recommend playing each of them to see which one you like best! Jim

Thanks alot guys, the posts so far have been really helpful. I'm going for the tenor, and I have been leaning towards the Yamaha 475. Is the 62 that much more $? And is it worth it?

Good choice. the tenor rocks

I'm thinking the 62 is about $400 more than the 475.

Thanks aravaioli. Does anyone else know anything about the saxophone listed above? (Allora) Can the Yamaha YTS475 sound/perform as good as a pro horn? I'm just starting to play the sax but I don't want a student horn.