I am considering a Rain computer with Sonar 8.53 or Radar Nyquist DAW has anyone used

Hi I am still having problems with my home built computer and Sonar 64 on win 7 64.
Gigabyte x58UD5 Rev 1 Bios rev 6
12 GIGS Kingston 1333 Ram
UAD quad DSP card
2  10,000  speed hard drives sata 2
2 storage sata2 hard drives  7200 speed
corsair  650watt PS
V studio vs 700
I use a multiplier to get ram to run at 1333  , turned disk caching off , tried turbo and regular modes in bios, tried ram timing settings. 7 7 7 21    and all on auto.      
I still get crashes from bit bridge even though i have set various plugins to run on different bridges as per Cakewalk Tec support. I also getting crashes with messages that I crashed because of  overclocking or voltage issues.
I am thinking of trying Rain computers or Buying a  IZ Radar setup for stability  as I cannot depend on this system and or software combination to not crash in session and wreck any credibility I may  have left with my clients.
Now that Roland supports the (VS700), I don't hold much hope for future quality support, given the history I have experienced with their customer support with other Roland products. Has anyone used a Rain computer with Sonar. Has anyone used an  IZ Radar Nyquist setup

Hi Jim
 Thanks for your help. I have been running Sonar 8 Five.3 producer, sixty four biton windows 7 sixty four bit pro, ( sorry my five key and six key do not work on my lap top , dog spilled glass of juice on keyboard).  I was told I could assign up to 32  numbers of bit bridge but it seems I cannot go over 10. I don't use many plugins at once ,and I record flat. The only VIs I use are pads and Pianos,  session drummer3 and guitar rig 4 pro sixty four bit.  i can't get the roland fantom to work in sixty four bit even with the hot fix. and it is unstable as a plugin as well. I have a UaD 2 Quad card for most of my other plugin effects. I do not use many of these at a time. I freeze tracks I am not actively working on . The rev of my MB is 1   Have you heard of any problems with this MB? I am afraid to get into any work as I never know when I will crash. The  loss of editing data even with  frequent saving . is a real problem, as on at least 4 sessions I lost 4 to 8 hours of wave file work. thanks again for your help.    FYI Melodyne has a new sixty four bit version of Editor both stand alone and as a plugin. I have it but no time yet to test it out, other than to run a file through both stand alone and plugin . Seems to work at this level.

Thanks Jim.

I've been using a Rain PC since 2007 with no problems at all.