As a matter of fact I'm playing a Jupiter trumpet and flugel at this time. The 846RL flugel is a very fine flugel and a bargain at places like Chuck Levin's Washington Music. I had it tweaked by Charlie Melk (valve alignment, got Amado spit valves to work right among other things) and it made a huge improvement on an already good and under rated horn. I'm playing the XO 1602 RSB1 trumpet with the sterling leadpipe and it's a very good trumpet-- plays great. I talked to a guy at Jupiter and a newer XO trumpet is coming out and is still going to be called the 1602 XO but it's different-- it'll have some sort of different leadpipe design, improvement in the valve block ,more fancy engraving and apparently is considerably improved. If this all turns out to be true this new XO could be one heck of nice horn. But remember this new model is NOT yet out yet so don't confuse it with the older model I have. However this model I'm playing now is something I wouldn't hesitate to recommend. It's a bit confusing because the new XO's are still called the 1602 but they won't have the "RSB1" type designation after them-- they'll just be called XOs. The new models are due out this summer and it'll be interesting to see what they sell for and I'd love to try one. You might start seeing stores selling out the older models (they go for about $1300-1400 as it is) and they will be an excellent bargain if they slash these to make room for the new XO. I got mine brand new like this just recently on ebay for, well, let's just say for about what two Monette Prana mouthpieces would cost-- an unbelievable value for a dandy little trumpet! Came with two tuning slides, and all sort of extras.... amazing.
Here's the site for the new XO line:
Jupiter XO - Professional By Design
As you can see from the Gearhead Page of my two bit web site I'm a big proponent of Jupiters. Not made in outer space but in Taiwan (the good China)-- Jupiter seems to be getting their act together and challanging Yamaha, and the rest. I'd certainly favorably compare these horns I have to anything else out there (particularly Yamaha). Capitalism and the free market at it's finest...