You've really got to make your own mind up on this one. Everyone has their favourites. I suppose its a bit horses for courses, but also the set up of a particular car may well feel different with various tyres. The Toyos are fairly cheap but don't last very long. I think the new assymetric Michelin Exalto tyres so far seem very good on my 155, but as I don't have a complete set, I haven't tested them in extremis. However, they gave the 75TS good turn-in around Knockhill.
An evergreen favourite seems to be the Goodyear F1s. They are definitely a level higher than Venturas or NCT3s. Unfortunately, F1s and Exaltos are the most expensive tyre in this size.
I don't usually like Pirellis, as I often find insufficient casing strength for hard use. That said though, some people swear by them and a P6 shot 156 did once stay with my Ventura shot 155.
If you like really tight handling and sharp turn in, then I think Goodyear, Michelin, Yokohama or Bridgestone. However, if there is any suspension wear or poor setting of the tracking, then these tyres will show this up and feel unstable.
More forgiving tyres such as the Toyos, Pirellis, Uniroyal, Continental, Avon, Dunlop or Firestone seem to give earlier warning of breakaway when the grip level is reached. They may not turn in quite so sharply but they seem to pick up suspension faults less readily.
Avoid Nangkang, Sime tyres, Hankook, Maxxis, Camac, Barum, Fate, Tigar, Trayal and GT tyres (Gajjah Tunnegal) as I think there are mostly dangerous due to very low grip levels.
Others which I am not sure about are Semperit, Courier, BF Goodrich, Nokian, Vredestein and Viking. I think that generally Stunner (Marangoni) and Kleber tyres are good for the money. That's about all I can think of.
This is a difficult subject as there are not many people who have really tried all that many current tyres for the 155 (I think). It your decision.