Lets see if I can remember my old line up. May be out of order.

Yamaha DX-7: Sound quality still beyond attempted modern reproductions of this classic synth. The DX just had a warm classic sound to her. OS was a complete bit** to operate. Keys were great, midi was decent.

Korg Trinity: Sounds were so so. Synth wise, top notch voice editing. Acoustic sounds were good for the time. Build quality was solid, and the touch screen was ahead of the time. It was a little slow to respond though. Limited with 32 note poly. Looked lime something from Star Trek,

Yamaha DJX (original): In my opinion Yamaha's greatest attempt at a budget dance keyboard. The patterns on that model were off the block. They were dead on! Real time control knobs, ribbon controller (assignable), basic sampler--although limited created great lo-fi samples, and you could edit them and set loop points. I was not happy to see they really limited this board in the recording department. Only 6 tracks, and no style recorder (which was a shame because the electronic drum kits were really good)

PSR-540: Decent sound quality, terrible construction. Looked like a video game. I liked the large screen. Recording limited due to direct disk recording. Style recording limited due to lack of copy feature. Each variation had to be recorded over again. (I can only imagine how annoying this was with the PSR-740) Midi was good.

Roland XP-60: Excellent board. No complaints about this unit.. Good sound, great features, built like a tank. Semi weighted keys, real time control, voice expansion. Still worth every penny today.

Yamaha EX-7: (Motif 6 was based on this one). This was a good synth from Yammie. Good sounds. Synth sounds were awsome. Acoustic was alright. The piano was a little weak in the higher registers. VERY SLOW processor. Zip drive loading was a nightmare. Sampler was good, Contruction was solid, and the key feel was good as well. Sequencing was pretty good (had a great pattern sequencer). There were actually 3 sequencers. One 16 track linear, one 8 track pattern, and one 4 track arpegiater (I can never spell that word). Sequencing was limted due to several things. Even though the poly was 64 notes, it dropped drastically when recording because of the size of the samples. There were times I maxed the poly with just 4 tracks. The memory was also limited to 30,000 events.

Casio MZ-2000: Sill kicking myself in the a** for dumping this board. Had to let her go due to space--small apartment + wife + MZ-2000 and other gear= bye bye MZ This board was a HUGE step for Casio. Sound guality varied. I think a lot of us were comparing it to the PSR-740 at the time. The MZ had extensive voice editing with 4 element voice structuring. You could even set velocity curves. Effects (in my opinion were way beyond the 740 because of the editing options). It also had aftertouch. The drawbars were great because there were 9 sliders to operate them with. Although no vocalizer it had a mic/line input with separate effects to that input. Styles were as usual subjective. However the style editing was beyond the PSR-740. It allowed up to 16 bar loops, and pattern copy. Plus you could mix patterns, and it also converted patterns Construction was good. That board was huge. It also had a great speaker system (15w) The MZ didn't get the attention it should have. Casio had for years retained the title of (The Toy Keyboard). The MZ sold for over $1,000 when it was released. I thnk it went for $1,200 and up. Casio owners and the public was not ready for this model. Casio should have marketed the board better.

Casio WK-3500: Bluezplayer put it best when saying "it's a junior MZ-2000". That essentially is what it is. Same sound set (polished up a bit though with re-allocation of DSP settings). It has 76 keys, decent action, smart media and floppy disk storage. Drawbars, great speakers, both pitchbend and modulation, midi is alright, styles are again subjective, One feature sets it aside from others is the ability to load new samples into the board. I currently have a Steinway sample in memory and damn it sounds good. Limited in recording--6 tracks with basic editing, no style recorder (although new styles can be loaded, presets cannot be edited). Overall great bang for the buck.

This is some of mine. I think I missed a couple of them.

Squeak