Nothing here this month. I hope last month's £25 win was not a one off.
Noeuf You need to think about your attitude to risk. If you put £5k in an ISA or other savings account and you're below the personal savings allowance and you got 1.5% interest, that's a guaranteed £75 per year in interest.
So you would need to win at least 3 £25 prizes per year to match the interest. But chances are, on a £5k holding, you'll win nothing, or 1 or 2 prizes a year - most people on significantly less than the maximum holding win little or nothing.
But there's a small chance that you'd win significantly more - and you'd only need 1 x £100 per year to get a better interest rate, so it's a gamble, albeit a low risk one. After all you can get all your money back instantly/fairly quickly whether in cash or PBs and there's no risk of the absolute value decreasing, unlike shares etc.
I currently have £10k in PBs and I think I've decided to leave it at that level for the next few years and put money in an ISA instead - it's a vague mortgage overpayment (our mortgage rate is 1.1% so no point overpaying) pension boost/retirement strategy as I should have a reasonable amount of spare income available.
When I have enough in an ISA to top up my PBs to the maximum £50k or close to, I might transfer a lump across. So then I should get close to the average 1.4% prize fund rate, so the average percentage loss should be much smaller.
But I'm also thinking about a stocks and shares ISA, so obviously I need to be prepared to leave whatever I put in there for the long term, so I need a reasonable amount of cash savings first.