I used Vueling and Flybe most recently. Flybe is less of a joke these days, which is pleasant. Vueling leg room was horrendous.
I flew Vueling last year and had no problems with leg room on a 2+ hour flight. As an interesting "aside" to illustrate the varied way the Airline industry works; I had flown to Spain (and its islands) a dozen times before my illness meant I could no longer afford Insurance, yet had never flown on a Spanish registered/operated a/c until this occasion. And the flight was MAN to Rome!
As Flybe has the nearest to what you might call a "comprehensive" network from MAN ie. numerous destinations AND numerous flights a day on some routes, it has been my most common carrier in recent years (albeit only 15 rotations in nearly as many years), and it is perhaps significant that the only two minor problems I have had, have been the two occasions I flew back from CDG. On each occasion, the delay was 50-90 minutes with little info provided by the agents at CDG, but once on board the crew explained that they had been simply playing catch up all day following problems at the start of the day (initial a/c went tech this time; crew shortage first time).