HiAfter having had same mattress for 17 years (yes, that's 17!) last year I bought a new one, but I stupidly bought cheaply and the mattress is now giving me back ache. I did try to replace it with one of these new hybrid memory foam/pocket sprung mattresses (OTTY), but whilst loving the concept after sleeping on my side and waking up with a dead arm it is not the mattress for me, so it is being returned as i write.Anyway, I now need to dip my toe back into the mattress market again, this time shopping with a more reasonable budget. However, looking around at them all it looks to be a minefield of expensive mistakes waiting to happen. so I need some help. I'm 17 stone, am alone and prefer to sleep on my side, so what would you recommend? I was thinking that your Artisan 1500 with the firm spring tension would be the one, even if the cost is higher than i would like? If it lasts another 17 years it'll be worth the money though :)Appreciate your thoughts