Whilst I've not had nearly as much use as I would have liked due to the weather, I've certainly got no buyers remorse. I especially like the cable management solution although the oddly sized power plugs required me to get some adaptors initially before re-terminating some leads.
It is a little chunky compared to the AM5 but as a consequence has more capacity when counterweighted should that be a factor but either mount will chuck a scope around with ease.
The only extra features that the 150i has are the ability to balance the axes, not something I'm overly worried about, but if you plan to max out the capacity, may be useful, and a cable managed ST4 Port. These days the ST4 port is all but redundant, but there are some stand-alone guiders that need one.
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