Yeah, I don't know about the topping or SMSL options you mentioned. The topping measures super bad and while measurements are not everything, I seriously doubt those can offer anything close to that NAD you listened to. The NAD 3020v2 is just out of your budget ( PS audio sprout, Denon pma60...) and would be a good match as NAD sound is usually a little laid back and B&W entry level speakers tends to benefit from laid back equipment IMO.
All of the ones I find are out of your budget. You might end up having to get the SMSL for now but set your expectations accordingly. You never know, you could be in for a good suprise!
All of the ones I find are out of your budget. You might end up having to get the SMSL for now but set your expectations accordingly. You never know, you could be in for a good suprise!