If you are using the Graham Audio LS3/5 speakers then I would certainly recommend the Croft amplifier especially if you are using a vinyl front end. The Croft phono stage and mosfet OTL amplification stage will bring a vividness and warmth the music and will drive the Graham Audios very well.
If you could stretch to the Croft 25 separate preamplifier and Series 7 power amplifier you will have something even better and may well never want to upgrade again. This combination would be superb and indeed I have heard it with Graham speakers although not the model you are using.
Main system : VPI Scout 1.1 / JMW 9T / 2M Black / Croft 25R+ / Croft 7 / Heco Celan GT 702
Second System : Goldring Lenco GL75 / AT95EX / Pioneer SX590 / Spendor SP2