CJ LS17 vs ARC LS15

Thanks for the comments so far. I'm happy with the W10 monoblocks, so I don't think I'll change them any time soon. I've had Krell MD300's and a Krell FPB200, along with various other amps and the W10's were a significant step forward. I found them much more musical than the Krells, good dynamics and good detail.
I'm not sure why people would suggest replacing them. The W5's are not the same amp as the 10's.
I want a little more midrange presence and bloom, and I feel that can be attained from a good tubed preamp.
From what people have said, the Prem. 17 might be too neutral for me, almost like the ARC LS15 which is also very neutral.
So maybe I'd be better with the 16 series?

Thanks

Ackman00...I've just replaced the stock sovteks with electro-harmonix. These are the series 2 tubes sold at Upscale Audio and are supposedly more warm in the midrange than the series 1. They did little to change the sound over the sovteks, if anything maybe a little more transparent and a little more stage depth.
Where do you buy your amperex from?

Rooze

Have you considered the LS5? If you want more body, warmth, the LS5 is THE ARC line stage to do this. It has a 3-dimensionality, bloom and harmonic richness the LS15 can not touch. Look for a MK III as these have a more natural top-end than the MK II and the III also has a little more resolution which is very noticeable on vocals.
John

I think if you can pick up a s/h prem 16 you will be making a nice step up. The prem 16 is smooth, dynamic and slightly warm with superior remote control. Just don't run long interconnects over 3 metres

ps, I don't think the prem 17 is neutral but a little warm - I have not heard the series 2 but I doubt if cj would dramatically change the sound.

Rooze, I purchased my Amperex 7308s (white label) from Tubeworld (www.Tubeworld.com). They were not cheap - I believe $750 for a set of 4 NOS tubes from the early 1960s. They were well worth the price - the difference was amazing. Check out "Joe's Tube Lore" for a detailed discussion of vintage 6922s and 7308s - its referenced on other recent posts regarding tubes in the amps/preamps section.