In our area, we have a reasonable SV, a Tesco express, a Dunnes express, 3 Lidls, an Aldi, and a short drive to a (was good when SQ but crap now SV) larger SV beside a smallish M&S, a large Tesco and a large Dunnes (3 different directions to those larger ones). And also a few good deli's and butchers, and 1 veg shop and 2 decent fish shops. And there's a larger M&S near my office.
I alternate between the local SV (most weeks realistically) and local Dunnes for most of my weekly shopping, but get a fair amount in Lidl and the independent shops as well. Local Tesco is handy to get milk or emergency bits on the way home from school after work (I collect teenage DD after her sports on my way home - and she's often "starving"!).
I occasionally go to the larger Dunnes to do a pantry stores refill big shop. And I occasionally use one of the others if it suits where I am and what I need to do.
Generally, I had been managing on a budget of €700/month up to the middle of last year, when I upped it to €750 - I have just recently upped it again to €800 per month.
I am reasonably happy with that figure because I do track my spending, and the annual average does work out at that. Some months I am working through the stores I have and the garden is producing veg so I spend less. Other months, work is bananas so convenience takes priority, the stores have been run down, or there are big events that need extras (or I see lots of special offers on things I use anyway and do a big extra stocking up - particularly the extra €10 off 6 bottles of wine when there are other specials on wine we like, or 20% back in loyalty card on wine, and I build my stocks for entertaining at Christmas etc).
The grocery budget includes cleaning materials, alcohol, food for home, I often get a bag of food in M&S for my office desk (milk (for fridge), fruit, nuts and dried fruit, some crisps) and snacks to have in the car for teenage DD to not go into hormonal meltdown when she is starving!
I try to cook from scratch but life has got too hectic recently so I spend on good quality sauces etc (like Bombay Pantry fresh curry sauces to add to freshly cooked chicken and throw in some frozen peas for veg). I do batch cook when I can so there are some curries and shepherd's pies and lasagnas in the freezer, as well as chicken breasts, mince beef, meatballs, good sausages etc. And tastes do change - so DD has become more interested in a well-filled bagel as an evening meal rather than a substantial dinner (there is lots of salad in it and some meat) but is also looking for eggs for breakfast some mornings when it used to be daily cereal - eggs with some ham, cheese and tomato are good energy for her, so I try to make sure I have those ingredients in always.
This weeks mealplan:
Sunday - DH and DD had a frozen pizza (as I was away travelling for work)
Monday - DH and DD had fresh pasta toretellini and a fresh sauce (I was home at midnight)
Tuesday - DD had a bagel while DH and I had burger and chips later (we were both out at different meetings and weren't home until after 9)
Wed - DD had a pizza, while DH and I had pasta with chicken and mushrooms in a cream/wine sauce (DH had another late meeting so I cooked after I'd finished some work at home)
Thurs - DH and DD got a schnitzel thing in Lidl en route home (I was out at a work thing) forgetting there was chicken and a curry sauce in the fridge
Fri - we are all home, and we are all having the chicken curry tonight planned for last night (all well in date still)
Sat - might BBQ if weather holds
Sun - not a clue yet
This is a particularly bad week.
I used to make Monday's dinner (a curry sauce, bolognaise sauce, chilli, lasagna, fish pie etc) on Sunday afternoons when I was in the kitchen anyway making a roast dinner - but DD hates roasts and we are now busy with other things, so it's less frequent. But I do occasionally - the "Monday" dinner is a double batch and the second half is frozen for another time.
But an average good week would be:
Mon - Chilli con carne (hopefully made over the weekend to just reheat)
Tues - chicken fajitas with plenty of salad bits and veg - still fresh things from weekend shopping
Wed - simple fish curry or chicken stirfry or a meal from freezer
Thurs - something quick for DD (before evening activity) and then a chop and potatoes type dinner for DH and I (meat from freezer)
Fri - something simple to put together or from freezer to reheat or an M&S ready meal or a takeaway