Red raspberries question this time... Polka & Glen Ample

[kt.]

My entire raspberry collection is to be renewed in November.  As well as 6 yellow raspberry canes, I am looking for early summer and autumn raspberry varieties too.   A lot mention Joan J but i was looking at Glen ample as a summer raspberry and Polka as an everbearing raspberry. Both are spine-free canes, and Polka are supposed to produce more and be larger than Joan J ??? ???   Opinions please

Glen Ample:
http://www.thompson-morgan.com/fruit1/product/cww3201/1.html

Polka:
http://www.thompson-morgan.com/fruit1/product/cww3518/1.html

[kt.]

[plot51A]

Bigger than Joan J? I find that hard to believe  ;D

[Mrs Gumboot]

No experience of Joan J, but the canes of Glen Ample that we planted at work this spring have already produced a small crop of very big, fat, sweet raspberries.

Not sure they were supposed to do anything til next year, but obviously no-one told them that!