Taike.... For something with longevity, I can't recommend the Roland G70 too much... I had a G1000 prior to getting the G70, and gigged that day and night for about eight years, and sold it in perfect working condition (very nearly showroom condition!).

My current G70, aside from some power supply issues that were cleared up under warranty, is mechanically perfect after two years of heavy gigging at an outside beach deck in Florida. It looks like it will remain as tank-like (and tank-heavy, Ian!) as the G1000.

Yes, there are other, slightly more advanced OSs out there, but it is still hard to find a more live sounding arranger, nor an OS that makes 'tweaking' the styles and SMFs any easier. The key-bed is still the best of ANY plastic action on any keyboard (not just arrangers) at any price, and as the direct first order interface between you and your music, one of the most important considerations for any that consider themselves 'players', IMO...

I am even doing first call session work with it, as the piano handily beats my kurzweil, and in a mix, can stand up to our studio's Steinway on SOME material!

Unless Roland add a Chord Sequencer to the NEXT G-series (if there even IS one, rumors hint otherwise), I anticipate using mine for decades!

I AM a little puzzled as to your choice of either an arranger OR a C1, though. They seem such completely contrary tools. I can understand indecision between, say, a G70 and a PAX2Pro, but a B3 and an arranger seem to have totally different goals. Now.... put them TOGETHER, and you'll have a system that totally rocks! Trigger the arranger from the C1's lower manual, and jazz your brains out...!

But choosing one or the other seems to indicate really conflicted goals. Do you NEED automated backing, or not? If you don't have a rhythm section on call 24/7, the arranger would seem the more versatile tool. If you can't spring for a G70 AND a C1, we have a few members at roland-arranger.com that are using G70's with Nord Electro modules, for the ultimate in Hammond authenticity (the onboard G70 B3 sim is passable, but not up to the Nord's 'grease' factor!), AND an 'on call' rhythm section.

Best of luck with whatever you choose...