Seeing you have all of this stuff the easiest way that I can see is for you to try all the combinations that you can yourself as this way you can hear what they sound like with your own ears instead of going by what others think.That's only their opinion and not really yours, especially if they don't have all your equipment to try or have never tried them![]()
Thanks for stating the obvious.

I understand that and opinions are what I am looking for. Thanks for stating the obvious.[/QUOTE)
Opinions don't mean squat!
How can anyone give you a valid opinion when they've never heard your system in your room. Trust in your own ears. If you can't hear a difference then it doesn't matter anyway.

Since this thread seems to be based in reality I need to say what I truly feel.
I've never owned a receiver and have no desire to do so. The speakers you have on hand are all speakers that I would reject immediately. Realistic Mach series all sound truly awful to me. I've never heard a Sansui speaker I wanted to listen to again. I'm not particularly fond of either JBL's as their "in your face" presentation makes me want to cut of my ears and run away. All of this is only to reinforce my original post about listening and deciding for yourself.![]()
In light of this and other helpful posts here I decided to do the following as a starting point...
1) Match the HPM100s and L100s with the SX-1250. Seems logical since it is these speakers that the receiver was made to work with.
No dog in this fight, but I am curious why you opine that receiver was designed for those speakers.
Personally, I would be inclined to match speakers to the amp/receiver based on characteristics. Meaning, the most capable amp/receiver mated to the speaker that presents the most challenging load characteristics and vice versa.
In light of this and other helpful posts here I decided to do the following as a starting point...
1) Match the HPM100s and L100s with the SX-1250. Seems logical since it is these speakers that the receiver was made to work with.
2) Match the Mach Ones with the hk Citation 16a. The mach ones are a bit power hungry (low sensitivity) and can handle a lot of power due to being acoustic suspension (amongst other things). The Citation 16a puts out enough power to get them going.
3) Match the Sansui SP7500X with the Sansui 9090db. Might as well give this a try since Sansui made their receivers to work with their speakers.
4) Match the Mach Twos with the Hafler DH-220.
5) Match the Onkyo TX-8500 with the JBL 4311B.
I will use this as my starting point, switch things around as needed.
Again, thanks for the input.
I will keep you posted.
I would opine that it's pretty much hogwash. But, i'm sure the notion makes some folks all tingly in the mommy/daddy parts., but I am curious why you opine that receiver was designed for those speakers.
I agree. But ironically, a very common thread among the speakers listed by the OP is that they all perform well in the marketplace. That said, the OP has enough collateral to flip to be able to obtain a truly hifi system without spending much if any out of pocket.The speakers you have on hand are all speakers that I would reject immediately.
Great advice, which speakers here present the greatest load and which amp/receiver is most capable in your opinion?