M. Logan Requests- Tube Suggestions in $1.5-2K??

Thanks for the suggestion's as i needed a starting point with so many options being available and i really wanted a perspective from Logan owners. Please don't hesitate to add more!
Pardon my ignorance but as a rule will tube's alway's run hotter than ss units? Again my Parasound HCA 3500 run's hot as it should i suppose due to it's size and power. Also, is there a minimum watt in a tube amp to drive these Request's properly, say 40 watt?
Also, my Requests are bi-wired at the speaker and also at the Parasound(bi-wired connect posts). Some other amp's don't have a bi-wire setup on the back of the unit. What do i do at the back of these amp's to retain my setup? Double the positive leads as one and the neg's as one?
Anyway, thanks fo the feedback! Love the ML's!
Neil

Thanks for your suggestions, i am currently looking at some Rogue mono's, now! However i'm confused with the watt rating's,sorry about my ignorance in this regard but i need to know what the adequate watt rating in the tube amp's would be(A class? right?) Do my Requests need 40-80-120watt's in the tubes? Like i mentioned above i have the HCA 3500 Parasound(350 watt @8ohm) and it sounds ok but it runs super hot! Thanks for reading this elementary crap but before i go wild on tube amp's i want to verify the right power rating for the Logan Request's.

Best

Neil