Used a few in the past and always found them pretty good. Don't expect to completely dry it though as can take a long time, you still need to air for a while afterwards. I used to like putting steaming towels on a clothes drier. I used it mostly for bedding and towels only (heavy fabrics) to save clothes from wearing prematurely.
Like with anything, you get what you pay for. I'd pay upwards of £700 for something decent.
I intended to get a separate dryer when I moved house then found a bit of plumbing needed changing behind the washer because of a leak, and due to that the washer doesn't fit in snuggly so now don't have enough space for a dryer. However, I've found in a modern home, being single I can just air dry anyway (either outside or in) which also saves a few pennies.