Spikes are a mistake from the 80's and like many things in life gained a reputation they don't deserve. The drivel about them acting as mechanical diodes and isolating speakers and such like had anybody with access to a lathe churning them out. Spikes couple very efficiently and will allow vibration in both directions.
Townshend's products make sense and work extremely well but are spendy. I tried some cheap as chips Vibrapods at about $30/set of 4 as a fun experiment to replace some Isoacoustics that I had under my Oppo and I prefer the Vibrapods. Later I saw a used Townshend platform which would match the weight of the component so I jumped at the oppotunity and glad I did. The difference was simply astonishing with a much lowered noise floor.
There's a new kid on the block Stack Audio making waves which I haven't heard but appear worthy of consideration