I had purchased this as a replacement to my mesh bag so that I could let hot wort drain out of the basket without holding/squeezing a hot bag. It does not work well as a 1-for-1 swap for a few reasons:
1. The depth of the basket limits the amount of grain that can be used for a 5 gallon batch in a 10 gallon kettle. For high-gravity beers I will need to use my bag again.
2. The basket only has openings on the bottom to allow water to flow, so the contact with the grain is limited and there is a significant temperature difference between the grain temp and water below the basket. This may be alleviated with a pump system to recirculate the mash water or additional holes in the side would help equalize temp more easily.
3. Hanging the basket after the mash results in the bottom of the grainbed sitting in the wort and incompletely draining. At a 7.3 gal pre-boil volume (accounting for boiloff, shrinkage, losses) I've still got to find some creative ways to maneuver the basket to drain. Moving the hooks to a lower position on the side of the basket would help the basket hang higher above the wort.
Eventually I'll rig up a pump/hose system to improve the mash temperature consistency, but that is additional cost that I had not originally planned for with the purchase of the Solo Basket.