There are several Spiraea which have the RHS award of garden merit which is always a good indicator when picking a shrub.
Spiraea Japonica 'Anthony Waterer' left has lovely pale red flowers, compact and upright it grows up to 1m and is fully hardy, illustrated in the first image top left.
Spriaea Canescens has arching stems, grows up to 2.5m with lovely white flowers is a popular species regularly sold in garden centres, easy to grow looks well in any border especially in a woodland setting although flowering best in sun.
Spiraea × arguta 'Bridal Wreath' is a popular variety with, as the name suggested, lovely white flowers carried on arching branches growing up to 1.5-2.5m
Spiraea Nipponica 'Snowmound' 3rd image right has arching habit as well with masses of white flowers and grows up to 2m. One of the most attractive varieties for the garden because of the profusion of flowers.
A Spiraea with really bright golden foliage is Spiraea japonica 'Golden Princess' which has pink flowers and a more compact variety growing between .5 -1m ideal for smaller gardens.