Not used myself, but have read fab reviews, possibly in the guardian food awards? There's often offers on special trial packs but it does seem very £££ I would give it a go if I ever had room in my freezer to put it all.
My dh was given a steak selection by my parents for his birthday. We have so far sampled teh chateaubriand, the fillet medallions and 3 minute steaks. I thought it was nice but not spectacular (but woudl not tell my parents this as it costs a bomb!) In my opinion, the fillet steaks I occasionally buy from Morrisons are better.
If I remember they dont state what breed of animal they are using hence this is why you dont get the taste. Best beef is hung/matured for min 3 weeks but this carries a cost and most top quality beef producers cant supply to such demand. Like ourselves we did the box schemes but couldnt sell enough. Personally, I would shop around for a more local producer. Anyone that supplies that much steak cant be putting the quality of the animal first. One beast only carries about 16 fillets.
Questions to ask are the breed of the animal and this should be a traditional breed native of this country. Continental breeds work if crossed but you wont get the taste and dont hang so well. Grass feed or barn feed on concentrates because this is where you get your cheap beef from your premium. Hang/matured for min 3 weeks sometimes up to 8 weeks but may be too strong. You wont get this in a supermarket or average butchers you need to do some research.
Seems a bit extreme really having beef delivered from scotland when there are probably excellent award wining producers in your vacinity.