Rds1 is not easy to repair or get technical support.
That will depend on who you know.... The Epson R-D1/s/x is easily serviced and most of the problems reported are usually minor. Turn around from Epson itself is not as long too.
I'm an Epson user. Had many opportunities for sub S$3000 M8 for quite some time now, but the Epson won me over for various reasons.
1. Value (not price)
2. Reliability
3. Higher ISO performance
4. Manual selection of framelines
5. Does not need expensive UV/IR filters
I can afford the M8/M9, but I can't afford the hassle. Hence I stayed with the Epson for digital RF, which functions well for what it is suppose to do. For some strange reason, there's not much love for the Epson here, probably due to it's less than glorious pedigree. In a lot of other places, it's actually quite a cult camera.
In my opinion, the price of 2K+ is still a great buy for the Epson today, and possibility for up to another year more. Sell it then and you won't lose too much, if any at all. The older Epson R-D1 can be had for under 2K and with the software upgrade, it's basically a R-D1s. I'm sure you already know that the Sony NEX also has a 1.5X Crop sensor and can mount all the LTM/M lenses and more.
But if there's a Leica whore somewhere inside you, then you already know the answer.
Cheers,