Mapletree Audio versus Decware preamps


Has anyone been able to compare these two low-cost, tube preamps? They seem to be desinged by folks that know what they are doing.
pubul57
Made the commitment to passives (Lightspeed Attenuator) in the system I was using the Mapletree; but I am actually thinking of buying it again as I do miss putting it into the mix.
Having had both the Mapletree and the Transcendent Grounded Grid, I believe the Grounded Grid is the superior preamp.
DId you use both with the same amp, and if so which amp? A nice thing about the Mapletree is the DACT stepped attenuator option, which is not available to me with the Transcendent since I can't do DIY.
I can't quite remember. There was a little while there where I went through a number of preamps pretty quickly. I believe the Grounded Grid followed the Mapletree immediately, so they were likely paired with the same amplifier, but I don't remember which amplifier that was now. I want to say it was a bespoke SET 421A, but I am not 100% sure.
The otherwise is the value camp I might consider: Van Alstine T8.

Would love to do a shootout

Decware CSP2+
AVA T8
Mapletree 2Ae
Transcendent Grounded Grid

Very interesting array, for high value, minimal BS.