elac debut 2.0 b5.2

Third time's the charm... or not. Long story short I've spent more than a year with my audio ordeal and this is my third attempt of improving my sound system and I'm nowhere near the end. I might summon the whole journey one day in another thread but today I'm asking for help from Elac Debut b...

Hello. Recently I bought elac's for 140$ and now I am searching for a matching amplifier. I would prefer used or vintage one. My budget is about 250$. I was looking at Marantz PM5005 or PM6003, Technics SU-Z2, Rotel RA 970BX or RA 413, ITT 8033, Yamaha R-S500, NAD c350 or c326bee, Cambridge...

This bookshelf has a 5.25" woofer, and retails for US$330/pair. The rest of the graphs are on Erin's website: https://www.erinsaudiocorner.com/loudspeakers/elac_db52/ Erin's conclusions: Discuss!