Colours are printed so are only a guide
The main facts are that the new range has 98 colours increased from 80, 55 of which are single pigment paints. In the main the pigment choices mirror those of the other manufacturers who offer around this number of colours. 19 paints are mixed from three pigments with a solitary one four (Warm Grey), the rest are two pigment mixtures. The percentage of single pigment paints, as in the old range, is lower than most of the others. Note `Quinacridone Gold' is now a three pigment mix, PR101, PY150 and PR206. I believe the only source of true PO49 Quinacridone Gold is now Daniel Smith.
95 colours are given the highest 3* star rating. One, Alazarin Crimson Lake 2*(PR83) which they claim is `Good'. The only 1* is Opera Rose `Average'. You might like to refer to the pigment details on the Handprint site www.handprint.com as a comparison. There is still some controversy over lightfastness claims by manufacturers.
The usual confusion exists with some of the names, so checking the pigment details is necessary if you wish to compare them with whatever the equivalents are you currently use. Examples, Chinese Orange, Sennelier Orange, Helios Purple, Blue Sennelier and so on.
Sennelier offer half and full pans plus 10ml and 21ml tubes. The most economical are the 21ml tubes, especially for the colours you use most. 10ml is probably better for colours used less often. Introductory prices are very good at both Jacksons www.jacksonsart.co.uk/ and also the SAA, although they are slightly higher than Jacksons. For some reason Great Art are quoting prices that, according to Jacksons in the brochure, are higher than the recommended retail, so consequently are not competitive at present. The only concern is that the leaflet calls the discounted prices `introductory' so we have no idea what the cost will be when the dust settles.
How good are Sennelier? I've never used them so don't have a view. I do believe they are perfectly acceptable, as are all the leading artist quality paints but people do have individual preferences. Sennelier are mounting quite an aggressive marketing campaign and four well known British professionals, Tim Fisher, Trevor Waugh, Billy Showell and Margaret Evans give them their stamp of approval in the brochure. You won't find Sennelier in many art shops in Great Britain who stock mainly Winsor & Newton and sometimes Daler Rowney. I found Sennelier in Truro Art in Truro, Cornwall, a large art shop who have recently also taken on Daniel Smith. There may be others in the larger cities but I'm unaware of them.