Looking for great tube integrated for Martin Logan Summit X speakers

All they shared was that the amplifier needs to have enough amps and current to drive the speakers. Not much help there, unfortunately.

Yes that says a lot, and what I've been trying to tell you.
Tube amps cannot do current like solid state amps can, especially the ones being bandied around in this thread.
Amp that do current well, are ones that can almost double their full output wattages from 8ohm to 4ohm and again from 4ohm to 2ohm 

EG: the hypothetical perfect amp that does current well, (there are always losses though)
100w at 8ohms
200w at 4ohms
400w at 2ohms 

Cheers George

Well, final decision time.  I very much appreciate all the advice and comments in this thread!  Definitely shows the passion we all have for this great hobby and the diversity of thought and really, hearing each of us has.  There are so many options and variabilities to choose from, but in the end, as many of you have stated, it comes down to our individual hearing preferences, goals, and budget.  

Today I returned the Sanders amp.  What a great company!  They paid to ship the amp to me and allowed me 30 days to trial it.  When I told them I was going to return it, they sent me a return notice from UPS - they paid the return shipping costs too!  As soon as it arrives, they said they will refund my entire purchase cost.  Who does that today?  Great people!

Tomorrow I will send my Plinius to Upscale Audio and I will keep the Primaluna.  Why?  I really love the sound, and I like the idea of tweaking the sound with new tubes.  I also spoke with a person who works on tube amplifiers who told me he did not believe I would have any problems with the PL and my Summit X speakers because of the size of the output transformers, which made me feel even better about my decision.  This amp is a BIG STEP UP from the Plinius.

Is this the last amplifier I will own?  No, it is not.  At some point I do want to have a separate preamp and amplifier.  When I do,  I will consider all the options the participants in this thread have provided, and maybe even a tube preamp with SS amplifier.  The PL integrated gives me a chance to try out tubes without breaking my budget by buying separates.  And if my hearing becomes more critical and I do hear signs of the amp clipping, I can always sell it and start the upgrade process then.  This decision has the added benefit of not having to convince my wife I need another $3000 (HaHa - she does not hear or see value in this hobby, prefering to listen to her music from her phone - yes, her phone!).

Given my budget and hearing, I feel this is the wisest choice right now.  I have no doubt there are even better amplifiers out there to consider, but budget does have to be a consideration.  I think of this as evolution toward audio nirvana, whatever that looks like to each of us.  I definitely have more upgrades in my future.

Thank you again for all your help and guidance!

Steve

smills59,

Enjoy you're new setup. As you found  out for yourself,  the knowledge/wisdom of the forums is valuable,  yet it doesn't replace what your ears ultimately prefer.

If your space allows it, speaker placement /room treatment will optimize their performance further.

Happy listening!

The smills59 OP will be back after the tube glow thing has has lost it’s appeal, for the right amp for the Summits as bigddesign3 did with a Krell.
As Martin Logan said Summits need current to sound at their best. (BTW current and amps are the same to whoever thought they were different)

Cheers George

george, it seems like you don't understand when to move on and let the man enjoy his new purchase. You need to eventually recognize that measurements are not the only factor in getting good sound....and your opinion is only one out of many.